I'm at the age when work, family and community commitments take up most of my time, and gaming has become a outlet to let off steam instead of a alternate reality where I invest a lot of attention. Most of my gaming group are in the same position, and this means the focus of our games tends to be more on action and heroics. We don't like to spend too much valuable and limited game time thinking about moral dilemmas, and we can handle no-win situations if a way to win presents itself fairly quickly. Otherwise, the DM finds himself facing a bunch of irritated and trigger-happy players.
I should also add that our group practises round-robin DMing, and we see the job of the DM as that of entertaining the players (just like how college students sharing a dorm room might take turns to do the cooking), so the DM can't play the "I put more effort into this game than you" card.