I always wanted two kids.
And I always wanted them to be close in age — no more than two or three years — so they could grow up together and be friends. After I had my first son, my mind didn’t change, but my circumstances did. Having another kid became impossible for a few years, and the possibility of a two- or three-year age gap evaporated.
We ended up with a five-year gap. And so far, so good.