My two girls are 2 and a half years apart. We won't be having any more.
I am finding DD2 easier as she just gets carried about wherever DD1 is going. I find the baby stage quite boring, so it has been briliant to have DD1 to keep me amused, if that doesn't sound too odd.
OTOH, all that sleeping when the baby sleeps and spending growth spurts eating flapjack, drinking herbal tea and lounging about breastfeeding goes out of the window. I am so tired some days I don't know how i keep my eyes open.
Plus, with DD1 we took her everywhere as a baby, she just slept in a sling or pram while we ran about visiting friends and so on. Now we can't do that as DD1 needs bedtime, but it is hard to find babysitters for a baby who doesn't sleep through yet.
They are loevly though, and I like to think we are getting the baby stage over and done with at once. They will grow up together.
My mum had me, almost exactly two years later had sis1, then 6 years after that had sis2. She says the bigger age gap was much harder as me and sis1 played together but in many ways sis2 was an only child, even up to now, when two of her children have left home and are out in the wide world and she is a granny, but she still has a stroppy teenager in the house. She says she loved having sis2, but she wishes she had had her sooner after the first two. Or had the first two later, more likely.