Bought a used 30-30 Winchester on a whim several years ago. It did not cost much, works perfectly, and is in great shape. Found out real quick that it is not that much fun to shoot all day.
I regret it only because it's taking up valuable room in the safe.
Side note: Now I really laugh when I watch the old westerns. They never run out of ammo and the rifle has no recoil at all. Yeah, right.