Is it good to have only one child?
She's reviewed dozens of single-child family studies and finds that only children aren't any worse off than their peers with siblings. "The studies all show that only children are not spoiled. They're no more lonely than other children, and they actually make as many friends as children with siblings," she says.
Having two children is good for your health
Having two children reduces mortality risk. Three different studies looked at thousands of older adults and found the same thing: two kids was the sweet spot for health. The risk of an early death increases by 18% for parents of an only child.
A recent Pew Research Center study found the number of women who reached the end of their child bearing years with only one child doubled in the last generation, from 11 percent in 1976 to 22 percent in 2015. Census data shows one-child families are the fastest growing family unit in the United States.
Parents who have one child may be overprotective. Failure to make friends. A child who is raised alone may have difficulties in making friends and lack social skills outside the family. Sole caregivers.
One is a sweet spot. A twin study of 35,000 showed moms of only children are happier than women without kids, and happier those with two or more. A recent study of 20,000 parents over 16 years shows the birth of a second child increases parental stress due to time pressure, and mothers are hit the hardest.
Are Only Children Lonely? The easy answer is that yes, of course only children can be lonely but it's not necessarily because they're only children — it often occurs because they don't have strong social connections with other people, especially those their own age.
Grow your family to at least four children! According to a study out of Australia's Edith Cowan University, parents with the most life satisfaction (which means those who are the happiest) are those that have four or more children.
No, it's not necessary. If you want a second child and can support one, then by all means have another, but you don't need to have another baby just so your first will have a sibling.
The bottom line is, it's totally fine and absolutely normal to change your mind about having more than one kid after you actually have one and realize what it's like. It's also totally fine to change your mind about it right now and then change it back again in a few months or a year or two years from now.
Perhaps the most apparent disadvantage of being an only child is the feeling of loneliness. Not having a sibling to play with regularly, or who they are able to share their thoughts and memories with, can be difficult. You may become more comfortable talking to adults.
Are siblings happier than only children?
An only child is more content and confident than those with siblings, reports The Observer. Happiness in children declines once there are more siblings in the home, an Understanding Society research study has found.
Even though two-kid (or more) families seem to be the norm, the truth is, a lot of parents make the decision to have an only child — or that's simply how life plays out. With one child, you can give all your energy to a single kiddo, prioritize career growth or travel, and stress less about finances.

There is evidence to suggest that healthy sibling relationships promote empathy, prosocial behavior and academic achievement. While healthy sibling relationships can be an incredible source of support, unhealthy and toxic sibling relationships may be equally devastating and destabilizing.
Research suggests that having two children is still most people's idea of the 'ideal' family size.
Another research study out of the University of Texas at Austin, which was conducted in 1986, has been the foundation of more research on only children in recent years. That study found that only children score higher on IQ tests and are often more successful all around.
In that study, which involved surveys of more than 5,000 people in England and in the United States, the authors found childless couples were happier with their relationships and their partners than parents were, and were doing more work on their relationships than parenting couples.
"The survey finds that the majority of respondents believe that two children is the 'ideal' number for family happiness, but the majority of respondents also have two children.
A study from Princeton University and Stony Brook University found that parents and nonparents have similar levels of life satisfaction, but parents experienced both more daily joy and more daily stress than nonparents. “Life without children is simply much more stable,” Glass says.
It's not cruel, just different strokes for different folks. Cruel is a rather emotive word to use and implies that anyone who has less than 2 children (say) is doing it on purpose. Plenty of women can't even have one baby let alone two or three.
Only child syndrome is a myth! Children without siblings are NOT more selfish than those with brothers and sisters, research suggests. Children that grow up without a sibling are no more selfish than those who have brothers and sisters around, according to a new study into only child syndrome.
Does having no siblings affect you?
A study has found that children who grow up without siblings are likely to have a different brain structure than those who do. Only children are often branded as selfish and spoiled compared to their peers who have brothers and sisters.
Forget the terrible twos and prepare for the hateful eights ‒ parents have named age 8 as the most difficult age to parent, according to new research. Eight being the troublesome year likely comes as a surprise to many parents, especially since parents polled found age 6 to be easier than they expected.
Three is the most stressful number of children, according to a TODAY Parents survey of more than 7,000 U.S. mothers in 2013. Mothers of three children report more stress than moms of one or two, while mothers of four or more children actually report lower stress levels.
That said, many experts still adhere to the recommendation of 18 to 24 months. According to Kecia Gaither, MD, double board certified OB-GYN and maternal-fetal medicine and director of perinatal services at NYC Health + Hospitals/Lincoln, it's best to space pregnancies 18 to 24 months apart.
Grow your family to at least four children! According to a study out of Australia's Edith Cowan University, parents with the most life satisfaction (which means those who are the happiest) are those that have four or more children.