generally i don't get gas till my car doesn't want to start and i have to park at a downward angle just to start it again to get gas.
i'm usually broke.
also, my fuel light has only ever come on once, and i've run out of gas like twice while driving, and like 3 times when i was trying to start the car to go get gas. bummer, right?
i'm an idiot, but in a civic, i get reeeeaaallly good mileage, even on fumes, so whatever.
i would never *need* gas when it was still a half tank, unless the gas station started throwing rainbow-colored signs at me that said "IT'S ONLY FIFTY CENTS, JUST TOP IT OFF ALREADY!!!!"
because when i still have a half tank left, it's grounds for dancing.