You have pretty valid reasons for moving abroad. And I would consider all of them good ones. The only 2 main reasons I continue to stay in the US is because of

You have pretty valid reasons for moving abroad. And I would consider all of them good ones. The only 2 main reasons I continue to stay in the US is because of the incredible number of really cool opportunities and the comp. I know there are cool tech companies all over the world, but the density of them in the US and specifically in SFBA is simply phenomenal. And my desire to work on hard problems is what has kept me here even though the immigration system is broken for people from certain countries.