Why would bright folks in the US leave the comfort and familiarity of their home to work elsewhere in the US? Or if you think that's a false analogy then keep i

Why would bright folks in the US leave the comfort and familiarity of their home to work elsewhere in the US? Or if you think that's a false analogy then keep in mind that there are plenty of European, Kiwi, Aussie, Canadian etc. immigrants to US as well. There are plenty of reasons to leave the country you are born in, and not all of them implies that you had it worse before. Wanting to get away from comfort and familiarity is in itself a reason to emigrate.