Look at all those games! Look at that slick, user-friendly interface! Who wouldn't want that? Regrettably, while I do have a classic Xbox, it's stranded in Michigan, and it would cost a pretty penny to ship it to the southwest, where I'm currently stranded. I could get a new old Xbox, but first I'd have to find one, then mod it. That would take a few hours of work, along with a lot of extra equipment. After that, I'd need to download the Coin-Ops file, which weighs in at a gargantuan ninety gigabytes. That's a lot of time, effort, and money, and frankly, I already threw in the towel on this idea two sentences ago.
I suppose I could settle for a Wii... lord knows I've got plenty of those. The problem here is that while the system is easily modded, there's not much hardware under the hood, making arcade emulation a crapshoot. Some games will run, while other games will run slowly, and still more won't run at all because the Wii just doesn't have enough RAM to accommodate them. Plus you have to deal with that stupid Wiimote, making it less than ideal as the heart of an arcade cabinet. Scratch that idea.
I do want to build an arcade cabinet eventually. I mean, I've got tons of flat screen monitors, the tools to build the cabinet itself, and the knowledge to put together a machine which could handle most of the arcade oldies from the 1980s and 1990s. Hell, an ancient Pentium 4 would do the trick... even that would be more powerful than a classic Xbox and a Wii combined, and it would be a helluva lot easier to set up for this purpose. Sadly, the only thing I'm missing is the cash to bring it all together. Some day, Jess... some day.