We knew when Moo was a year old we wanted just one more child, after that we always said DH would get the snip. When Buster arrived 18 months later I was hesitant for a little while...but in the end I was very happy for DH to go ahead with it. It still took at least a year thanks to my husband being a procrastinator, losing referrals and needing to organise his shifts as his was done under a general. If we were younger (DH is over 40) it's possible we would have waited but we are very happy with our decision and I'm sure the result would be the same.