How long do you play until you're satisfied?

Normally when I lose or something, but when it comes to Spyro its until it becomes so easy that I have to shut the thing off.

Until I get stuck and decide to play later. So how many hours I spend playing varies. Sometimes the game will never end, sometimes it ends just when I see the credits roll.

Never! If you've played Threads of Fate, you know how little it has to offer, but I'm still playing it.
Don't even get me started on FFX.