I've had some interesting cycles myself. I go a long way back with these computers, having used them when they were current, then picking up some machines when they were cheap for fun.
The idea for the lab actually came a long time ago, back when I was in school, since I always felt it would be a good idea to have a lab where anyone could go when they wanted to learn something new or just needed a place to relax. This, again, was when these computers (including the Mac Pluses!) were still capable of running current software. I actually scribbled the idea onto the back of a church bulletin in second grade. The lab idea finally came to fruition after college. Today, I usually have at least one event a month and am looking to add more.
For a while, I got into collecting Macs for collecting them. Eventually, I realized that it was silly to have so many that I wasn't actively using, either in the lab or on my own, so I pared down the collection for the sake of practicality, space, and, admittedly, because I hit a financial wall at one point. Today, my "collection" outside of the lab consists of the three older Macs on my work desk (the LC, Plus, and SE that I've had for years and years), a 5400 I am planning on setting up somewhere when I get a bigger place this year, and a CC I'm hoping to find some space for somewhere. (I have toyed with the idea of selling the CC for a long time but just can't bring myself to do it).