I think lots of “liberal” guys would be happier in a conservative environment,[1] with the greater social structure and narrower horizons of conservative society. If what you really want is to settle down, have kids, and live a normal life, you might be making yourself unhappy trying to hack it in the NYC or SF's dating market--which is full of ambitious, individualistic people who aren't placing a high priority on those things. Consider that you might be happier moving to a red county and finding a conservative woman whose life priorities may be more aligned with your's--even if you may have abstract disagreements on immigration policy or the long-term effect of the welfare state.

[1] Of course the opposite is true--but liberally minded people who can't wait to leave Iowa is a well-known trope. We don't talk so much about the folks who went to the big city for education or career opportunities, but would actually be happier in Iowa.