Yup. I've got 10 1/2 (room for 9).
Oldest is circa 1990, all dot matrix except for Pinball 2000 (which I'm counting as 1 1/2, read on). For P2K I have a Star Wars Ep 1 and a Revenge From Mars "kit". For those not in the know, that means two different machine options but can only be set up to play 1 at a time, requiring 30 minutes or so of work to swap out. Fortunately I acquired most in the early 2000s before prices shot up. Aside from P2K, I've got Medieval Madness, Attack From Mars, Monster Bash, Addams Family, Twilight Zone, Scared Stiff, Big Bang Bar (reproduction by Gene Cunningham), No Good Gophers, and Lord of the Rings. All work 100%, and have made some mods to suit my tastes. I'm the original owner of 3 of them (BBB, SWEP1, LOTR). Most of the others typically spent a year or two on route before I got them, so they look mahvelous! Only one required some play field attention due to wear (NGG). None would be restoration candidates (okay, maybe somebody with waaaay too much money and/or time who waaaay too picky). I'm at the point where it's tough to play in an arcade (with a few exceptions, particularly Lyons Pinball which is a great place, though I've only been a couple of times), because something isn't working right. Until you've played a pristine, freshly cleaned pin that is 100% working, in a room with nothing else on except your pin (with upgraded speakers!
)you don't know what you're missing.
I agree with the other posters about not being scared by electronics, you can always send them out. I've done that a couple of times, but have also done repairs based on symptoms, for example replacing capacitors on driver boards. It just makes sense, they go with age, and when they start resetting you've got a great chance of being right.
Sadly, I haven't been playing as much the last few years. I've gotten so spoiled by having them around it seems routine. I've wondered at times about selling some, given the price increase they're worth some $$$, but it's still small relative to my stash and I would never replace them, thinking I may cut back on w$rk or RE in the next few years and will have more time for them.