Yup, league bowler here as well. At one point I was bowling 3 nights a week in three different houses. Carrying 200+ average in all of them as well. However kids and work have forced me to scale down to one night a week. The wife and I also bowl on a mixed summer league just to keep the cobwebs from setting in.
The one thing I hate about it though, whenever friends want to go out and bowl for fun I feel like I still need to drag my bag out with me. I just can't bring myself to bowl with a house ball or rental shoes. Does everyone else have that same issue?