My parents traveled often for work in the early to late 80s and we would usually take a two-week RV trip somewhere in the country once a summer, so I fell in love with these machines in hotel and campground game rooms. Some of these game rooms were massive, as in 25+ games and pinball, and some places would have only one machine tucked in the laundry room (got sick of Donkey Kong because very often, if they only had one, that was it).
I remember a very small arcade in my hometown in the back of an old-school Midwest cafe. Probably six or seven games tops, but the only two I remember are Omega Race and Track & Field. Right about when I was 14 a small baseball card shop/arcade opened right next to my parent's office and I'd hang out there after school until it was time to go home. They had Rough Ranger, Black Tiger, Time Pilot '84 (still a favorite), Tron, Gauntlet and Superman.
Of course, as the NES arrived I was growing out of my first game phase and became a strictly casual, at-home gamer.
My interest was also re-piqued by MAME, where I found Yie Ar Kung-Fu after 15 years of not seeing hide nor hair of a machine (or many other machines, for that matter). Then, last year, 11 years after graduating college, I decided if I was every going to actually own a machine - a dream of mine as a little kid playing them - I might as well do it. And lo and behold, a YAKF shows up on eBay. Good price, waaaaaaay too long of a drive, but I got it and brought it home. Fixed it up a bit and have had a blast playing it. Even set a short-lived record on it.
Since then I've floated around this forum reading up on all things arcade and finding the hobby even more fascinating then I had originally thought. The collection is now growing slowly, but steadily.
I'm not a restorer, but I can do minor repairs and I love having working machines for people who come over and "get it."
I guess ultimately for me it's a nostalgia thing, but the kicker is it's just as much fun now as when I was young, maybe ever more so.