I'm an intermediate player, I win my local mini probably around 40% of the time, and have gotten plastic winnings from almost every tournament I've played in so far... Yet last weekend I went to an Ice-Bowl at an incredibly hard course I've only played twice before, with a division of players I knew I had no chance against on the course. A few days before I was practicing straddle putts and my shoulder began popping, nothing too painful but definitely messed up my putts.. which is about 70% of my game.
Not only did I still go to the tournament I had no chance of winning, with a shoulder messing my game up... but for a 25$ tournament I donated an extra 15$ to the charity. It's not always about what you're getting in return.