Particularly if your partner has children from a previous relationship. I have one baby with DP. He has two older children as well. I've been thinking about whether I'd like another child in a few years time. My partner would then have four children which I know isn't unusual but I don't think he is so keen to have four (his decision of course!). I personally think it would be lovely for baby DS to have a sibling closer to his age to play with as I remember all the games I played with my sister. But my pregnancy wasn't easy and I'm getting older so worry about complications. Obviously if DP outrightly said no I'd accept that but I'm just curious as to others decision making processes and (please don't shoot me) whether it was the right decision.