I was 24 years - and No I would not change it. As a Grandad now of two (11 & 9 years) I am enjoying being young enough to 'get into mischief' with them ...even though, .. perhaps old enough to know better = lol
I was 23-- my husband was 43 (not his first child)--- we started with TWINS (boy/girl) -- they were born at the top of 27 weeks and stayed in the NICU for 3 months then 18 mo. later planned baby boy. born on my biological mother's birthday.... and then......... it was a coupon for buy 3 get the 4th free!!! (no but baby #4 was the .01 percent when on the "pill" ) .....................born on my mother's birthday 3 of the kids are all in October!!
I was 26 my wife was 24. It was planned.child. We wanted to still be young when they became active in sports , scouts , school etc.
My dad was 37 years older than me and I thought he was really old. My daughter is 13 and I just turned 50. I don't feel old at all.