I never wanted kids, but H talked me around.
We discussed how many we would have, he was all for high numbers but we settled on 4 max.
We are expecting our first, and H has now said we should stop at 2, because "we already have two".
That was my argument for not having a big family- we have DSS and DSD already. Now, after convincing me 4 would be lovely, he wants 2.
I don't believe I will feel 'done' after 2, unless possibly they are difficult births/babies.
My mum felt done after 1, 2, 3, and 4... she had 5. None planned.
5 is her absolute limit though, she has had a hard time. Youngest is nearly 8 and mum "has her life back" so to speak.
It depends on the kids and your family I guess. If you don't feel done, you're not. But if your DH feels done... well a long chat is needed.