Literally everyone I talk to who has had a second child says they did so to give their first child a sibling. People keep telling me to have another one and their only reason is to give dd a playmate! I look at posts on Mumsnet about people agonising over whether to put themselves through it all again because they feel guilty for having an "only" child. I just really wonder does anyone ever have a second child for themselves or is it always for the benefit of the first born?