The Winning mode. Seriously though any
poker game can be profitable if you can manage to play well every day, the problem is how much time do you have, and just how good you are? A good friend, who happens to be a professional player, once told me that if I can play 20 MTTs every day, and finished in the money in 25% of them, and win 1 in the 20 then it's time to give up my day job.
I still play an occasional MTT but no where near win 1 in 20, I play mostly SnGs and although may not win as much money, I certainly enjoy playing 8 or 9 games a day, I could play many more but get bored after a while and quit.
Poker is a game I enjoy, but don't take too seriously, I like to have fun, and happy if I make the money, even happier if I can make the Final Table in an MTT, but winning is always an after thought, I never start a game thinking I am going to win, only that I want a bit of fun.
When the fun Stops, STOP!