I had about 18 mths difference etween my sister and myself, we're close-ish, I suppose...lol

There's 4 years difference between DD1 and DD2 and I quite like it, DD1 was off at kinder when DD2 was born and now, they get along great and are close, most of the time.

My sister's kids on the other hand have a 2yr gaps between them, so 4yrs, 2yrs and 7 weeks and I see how much she struggles with them and there's no way on earth I could do that, but that's just me.