When you do have more than one, of course they'll be company for one another, but when you only have 1, they don't know life any different. IMO if you make sure your child has a good social circle, they'll be just as fine as other kids with siblings IYKWIM? We are having a dilemma at the moment about having another,as it will be #4. The question is, do you have what you want (which i dearly do) or do you sacrifice what you want to be able to live more comfortably?