I vote to get to pare your collection down to 2-3 games. Seems more reasonable than going to 0, honestly I think you'd get about 90% of the fun of having pinball machines in your home with 3 games you like. I do get, though, that sometimes it's easier to just give something up than to moderate it and pinball might fall into this category for a lot of people as the hunt for the new machine can be just as appealing as playing the games regularly.
Also you'll get the benefit of looking 10% less crazy to guests (only 10% because I think it's having the second machine that really gets people wondering what's going on).