There has been a rule floating around the self-help community since 1993. It states that 10,000 hours of practice can make you an expert in any endeavor.
I have no idea whether this is true or not, but it's safe to say I could have a decent golf career had I spent my time doing that instead of playing one of the 20 odd MMORPGs I've dabbled in.
Unfortunately, at some point, those MMOs lost their charm for me. I still pick them back up as their developers release expansions -- and I always look forward to those around the corner -- but it's been several years since I logged any daily playtime.
At first, I thought it was me. I thought, "I'm too busy," or "I have to focus on other things." But just like when that line is given in any other break up -- it's actually always them. These are the five reasons I don't play MMORPGs anymore.