Cameron's got a good point, I'm definitely That Guy who always wants to run out. I sort of lose interest if I don't. I still try to win but I don't enjoy it as much.
I've seen a lot of sellouts on safeties... enough to know that I'd rather take a flyer at a tough shot if A. The leave is fairly high percentage, and I should be out or B. there's a clear 2-way going on where I leave the other guy crap if I miss.
A very bad habit that some people find hard to break... taking a flyer when you have no chance of getting on the next ball and no hope of getting out. Another very bad habit is cinching the really tough shot and not paying attention to leave. It's useless to focus really hard on making a tough shot when then having nothing to show for it. If the shot's already a 15% shot for you, go ahead and spin that cue ball and try for a good leave. If that drops your make percentage to 10%, so be it. You're already in trouble, make the best of it.
Everyone's luck runs out sometime, don't force yourself to do crap like back-to-back razor thin cuts or full table banks, the percentages catch up and you're gonna miss. Only do the flyer when success = probably winning the game.