We (or at least a majority of humans) do still have inner desires to have kids, though; they just get balanced out by other considerations, mostly creature comforts/not wanting to deal with the hassle of kids. But yeah, evolution did not foresee birth control, so that’s a substantial misgeneralization.
We are still a very successful species overall according to IGF, but birth rates continue to decline, which is why I made my last point about inner alignment possibly drifting farther and farther away the stronger the inner optimizer (e.g. human culture) becomes.
Currently these two links include the commas so they redirect to 404 pages