How To Play

I wonder if other gamers have this difficulty? I have so many games, I don't get around to playing them all in much depth. Some I do, but even those I like to leave to return again (and re-learn the moves etc.). So, this post is really me wondering whether I should just stick to finishing one game right through to the end before moving onto the next? (This could take a long time and wouldn't stop me buying games but may lead to a load of unplayed games - that is kinda the situation now).