My parents do! They just get up from the couch, usually on Saturday, and usually in a 2-car parade, drive 5 or 6 miles to a gas station, fill up, and return home! My wife's parents do this too, and about the same distance. Some grownup 20-somethings still bum around the house, and they do as well. Probably need their space. Myself... I get gas on my way to or from work, or on other errands. Sometimes I can get a better price elsewhere but I don't seek it out. I will fill up "out of pattern" eg a 1/3 tank if I stumble upon a cheap station. I use a rewards credit card and always fill up, and always pay it off fully. I understand *slightly* if folks like to fill up on payday... but making special trips? Egads.