1. The presence of top research institutions across a wide spectrum of science & technology.

2. The footprint of this research in reputable publications & conferences.

3. The amount of capital investment to bring ideas to products.

If we consider this practical yardstick - US is ahead by a fair margin to any other country.

What I meant is that unlike a lot of countries where you are bottlenecked by choices of educational specialization, profession, career & personal development, as a US resident one doesn't face any of these. There is ample scope to pursue your interests or take risks to change your career path, things which are unthinkable in the aforementioned situation.

The emphasis on his is not as telling as you make it out to be given that fathers also play a role in the conception (by definition) and raising (hopefully) of children. Some men will see what they considered to be their "right" to skip the consequence of them having intercourse without contraception taken away. Those who consider elective late-term abortion to be an essential part of life may move to those states which continue to provide this - New York and California seem to be poised to become abortion 'free states' - while those who consider abortion to be an abomination/against their religion/... may move to those states where it is limited. As far as I know - and correct me if I'm wrong - there are no states where abortion in case of rape or incest or in those cases where the life of the mother is directly threatened is forbidden.

In US, I always felt at home. There were people just like me - eating similar food, sharing different festivities, of same socioeconomic strata etc. Eventually inclusivity & diversity retains immigration. US (& UK as well) does better than most other developed countries