My first age gap was 2 yrs - my son being 2 when DD was born was too young to remember being an only child and I am lucky in that they are now really great little mates and play well together - so far

They are both looking forward to this one - 5.5 yrs for DS and 3.5 yrs for DD - we were aiming for another 2 - 3 year gap, but didn't work out that way. When we were preg last year (missed m/c) my DD was still an awful sleeper, but for some reason around Christmas a switch turned on and finally she is good - so fate we think

I have a friend who has just had another bub with her DD at 5.5 and her DD is having a hard time acceptance of the crying, time away from her and all the usual things.

Really depends on your kids I think - they are all so very different.