Like many mentioned, I do it just to get away for a few hours a week where I am not connected to my cell phone or dealing with anything else in life besides having a good time with some buddies and being slightly competitive while doing it. As bad as it sounds, it also forces me to leave my office on those days. While my wife would like it if I said I would leave every day on time even if I don't have ball, I often times end up working later than I ever anticipated just to get stuff down. While sad, the days I have games I realize I am part of a team that would like to play with a full squad so I try to keep my commitment and make it to the fields.
With that being said, as much as I enjoy being at the fields, I will never treat it like game 7 of the World Series like some of these guys do. I can appreciate someone giving 100% at anything they do, but I have had my ACL torn by an idiot that felt like he needed to break up a double play ball in the 7th inning of a game so his team could come back from 8 runs down. Ultimately, I still have to go to work the next day.