How do you decide between flying and driving for a trip?

I usually weigh distance against hassle - anything under 5-6 hours and driving feels worth it to avoid airport lines and baggage fees. For longer trips I'll fly, but I hate the time sink of getting there early, so I factor that in too. Where I'm going matters as much as how far though; if I need a car at the destination, driving makes more sense even if flying's technically faster. Bad weather can kill the whole flying plan for me since delays stress me out way more than taking the scenic route.