You'd be surprised at how well an analytical mind can approach the problem of getting good at an artsy field. But if you go in with the assumption that you'd be fucked, well, it might be a self-fulfilling prophecy.
So if those were the main areas where there's decent money to be made, best I could hope for is get a mediocre position to earn some money to hopefully pay back my student loans while definitely being unhappy doing something I don't enjoy. The alternative would be to go into some field that pays shit, let's say CS in this scenario, where I might be excellent at but even earn less than being a mediocre painter, and hope to still make it there and at least be happy. Now the choice is much tougher IMHO that what was initially suggested.