So since I couldn't find anybody last night to talk me out of it (looking at all you afk people) I've gone ahead and started the ball rolling on getting my own MAME arcade cabinet built.
In case you're not sure what these are, it's an arcade cabinet, like at the arcades, except it has a PC inside of it with a harddrive full of every classic and emulated game under the sun, and a menu system to replace the OS interface with an easy way to get at all of the games.
Once upon a time I thought of maybe trying to do this myself and just ordering all the bits and pieces, and getting a carpenter friend of mine help with building the actual cabinet itself, but I don't have the drive in me anymore for that. So I thought maybe I could find somewhere to buy or get it custom made. Theres a well known place in the US that does it but they cost a good $3000+ even for a basic one.
While looking for a UK alternative, I found a place that seems to do them custom built basically any way you want it for under half that price. And it's literally just up the road from here, like a 15 minute drive. Better still, they're able to make them "slimline" so that they don't take up your whole damn house and be nowhere near as heavy. The only reason they were ever so damn big was because of the massive CRT TVs inside them anyway.
So I'm looking at getting made a so-called "slim" cabinet:

(Sample picture, may look different, but basic shape/size/layout will be the same.)
I'm going to get it fitted with the lit up buttons and marquee and a proper coin mech (you'll have to actually put coins in the machine to play, no mashing the insert coin button.) and hopefully a few fancy extras like USB ports on the front for attaching addons.
It will probably take approximately 4-6 weeks to build, but you do get photos and updates on it's progress so I'm going to post those in here as and when I get them.
So there you have it, tell me if i'm crazy if you want, but I already contacted the company with what I want. Can also let me know if you know of any particular arcade games I need to get ahold of, like Turtles/Simpsons Arcade and the Metal Slug series. This thing won't actually come with a game collection pre-installed on it (just a small selection of free ones) since, you know, it would be slightly less than legal.