Originally it was because my dishwasher waste used to pump old rice and stuff into the utility room sink (still does, to tell the truth).
At the time, General Chat was a fairly fun place to be around - Brain Teasers, light-hearted chat etc. And now I just can't seem to stop.....
Also, I can understand wiring problems, so as long as I can get to them early, there's still a warm feeling to be had when someone has wired their permanent and switched lives together.