For me it depends on if I am keeping score or not. Usually after work, I am trying to get 18 holes in the ~3 hours of daylight I have left. I am usually by myself in a cart, and I am concentrating on hitting the shot I was trying to hit, so it is not uncommon to drop 2 balls next to my tee shot in the fairway until I get it right (my opinion, better to practice this way then on the range).

When I do keep score, or am in a tournament, the rules of golf apply, and therefore I don't take gimme's and putt out.