Well, I’m an only child, I’m very happy with it. No complaints, and comparing myself with my cousins, a family of 5 children, I’d have to say that I am the healthier of the group.
Granted all our differences aren’t directly attributed to the number of kids, but I have little doubt that many of them are. Some very important ones at that.
Money was always tighter around their house for obvious reasons. This in itself isn’t a bad thing, but I think it tended to feed a handful of other problems. The parents tended to be more stressed of course, and it forced my Uncle to work long irregular hours. That detracted from the parenting. The most fundamental problem I think was the lack of discipline around their house. The long, odd hours, minimal attention to the young teens (parents dealing with toddlers and infants at the time), and eventual sense of surrender towards the last few years had a tangible effect.
There is obviously a cliche about only children being spoiled. I don’t think this is warranted. Most spoiled kids are spoiled because of either a parents percieved shortcoming, or simple fact that they have more money than they can spend. The most common case of spoiled kids is from divorced parents, followed by absentee parents (like travelling too much for work, etc.). Behind this however is the case where parents can simply afford to get their kids alot of things that their peers don’t get. Only children are prone to getting this treatment more than other kids, but not so much more so than kids who are part of a large age gap. Not to mention that rich kids get it, no matter what the numbers.
Of course money isn’t the only way to spoil a kid, but the above groups probably will see the lions share of attention and pampering as well.
What drawbacks are there to having only children? Well, I’d say they definately could develop in a manner that made it hard for them to socialize well. I had a next door neighbor who was my age, so I think this was diffused in my case. I think only children will develop nearly idnetically to siblings if they have close friends of similar ages and get into early daycare or preschool environments sooner than later.
I’d say the downsides of being a only are easier to negate than those of being a sibling. Parents should always carefully evaluate their decision to have children, and this doesn’t change after the first. In one family’s situation having a second might help his social skills, in another it might hurt your ability to parent and be extension hurt his development in other ways.
There’s certainly no right or wrong answer for everyone. And being a only is IMO not a negative in any regard.