I feel like this is such a tricky topic to discuss. Ultimately yes, it is your body, you make the decisions. However... I'd convey these feelings to your husband and consider his thoughts about having one child.

I have several friends that are only children and like any other kids (or adults I should say) they each have their own successes, failures, and problems. I can give anecdotes of you'd like, but overall I think it all comes down to parenting.

Regardless if it's one child, two, three or more I think parenting is what makes a person who they are externally. We all have our innate characteristics and behaviors that tell us to do what we do, but parents will reinforce, punish, explain, and reward etc a child's behaviors.

More often than not, sadly, with only children I've seen entitled, self-absorbed, and bratty behavior. This still comes from kids with siblings too, but I've always had a very different vibe from the only children- almost nasty like.

On the flip side I've met some of the most AMAZING and well rounded only child individuals. The difference between the two is like water and oil!

My source is I was a college recruiter turned into an adviser from a very well respected university. My group of students to handle was the incoming freshman class.