I remember those days growing up saying i'd get married and have babies close together so they'd have close relationships and you can get all the pregnancy/childbirth stuff 'out of the way'.
Then we were surprised with DS at 23. It was all SO SO SO much harder than I ever thought. So demanding, so overwhelming, everything basically out of your control. I thought I was a maternal person but my lack of patience is my biggest downfall. I had a couple of friends have their first around the same time as us and they have gone on to have 2nd, and 3rd babies and I just couldn't imagine doing that at all until last year.
So no, I don't regret having DS - I just quickly realised there is no WAY I could have coped with a toddler and another baby. Which is why DS1 has just turned 5 and we are only now expecting our 2nd DS In fact, if DH and I never reunited after our separation, I would have been quite happy staying with 1 child only.