Better to go to expensive dream school or cheap safety?

I’ve said it in other threads, but is worth repeating: I’ve always dreamed of driving a Porsche Cayman S ($65K). But I can only afford a car that’s half that amount (not even half…). So what do I do? I drive what I can afford. It’s that simple. And, not only that, suppose I’d need to buy a new one every year for four years (without the benefit of a trade-in, so paying the full cost EVERY YEAR). So why do people not understand that simple concept in the context of colleges?