I don't disagree with everything you said, but I don't think its extreme to uproot yourself in search for a partner. Choice in a life partner is going to be one

I don't disagree with everything you said, but I don't think its extreme to uproot yourself in search for a partner. Choice in a life partner is going to be one of the most consequential decisions you'll ever make. If you've got to go to the end of the earth to find your soul mate, will you do it? Extreme, hyperbolic example but it shows my point. All the things you need for a successful pairing and family, similar culture, similar socioeconomic details, similar values, similar philosophies, similar life goals... Going somewhere where the potential partners are more like you (while of course simultaneously making sure you meet their criteria as well) is not that extreme when you consider that you will ideally spend the rest of your life with them and raise your children with them.