I have 3 kids. But that was because I had DS1 when I was a teenager, so when I had DS2, DS1 was nearly 11 and I wanted a sibling close in age for DS2 as I think DS1 was lonely growing up as a single child until he was 10. But also I wanted another baby, and I also wanted to see if after 2 boys I might have a DD. But overwhelming it was because I wanted another child. If they were all close in age I don’t think I’d have had 3. Not least because of the close of full time (or 4 days a week as I later went to) nursery cost.
The majority of my friends have 2 children, all are same sex siblings. The only friend I know with more than 2 went for 4. They are all grown up now having kids of their own. She didn’t struggle with 4, and they are all really close which I think is lovely.