Red states pay lower state taxes because they don't want the government to do all the things blue states do. Why should red states subsidize all the things blue

Red states pay lower state taxes because they don't want the government to do all the things blue states do. Why should red states subsidize all the things blue states pay for? The fairest system is to charge everyone the same federal tax rates. The usual objection is that blue states subsidize red states. Two problems with that. First, it isn't an accurate description of reality - some blue states are net recipients of federal funds, some red states are net payers. Second, most of those funds go to Democratic programs (entitlements) - so even if it were true, Democrats chose to do that.