To me this particular cabinet is unique. Most cabs are ---smurfy--- particle board or other wood, you can easily replicate them. This cab is hard to replicate. I generally wouldn't care if a wood cab gets messed up. Given the unique situation of this particular cabinet, I think its best as a museum piece, or resto.
mameing doesn't bring life to a machine, unless you don't have the original hardware and you run a dedicated MAME for that set up. That's my opinion. Like if you really liked Tron, had a Tron cab, resto'ed it all up but didn't have the boards. Running a dedicated MAME, that only ran Tron on it would, in my opinion, bring life to the machine. Taking a cab and loading it up with a bunch of stuff, half of which you can't even play, does nothing to honor the machine, in my opinion. Instead, I think its the opposite, you are taking something unique, and making it just like every other PC out there running a front end.
Re mame is murder. I wouldn't go that far. I don't think anyone has an obligation to do anything. That being said, when you have something rare, its irrational to not take full advantage of the situation. If all you want to do is play mame, you can build a rig out of cardboard and duct tape (you can, I have seen pics) The most rational thing to do would be to sell the cab, use that money for a generic cab and use the rest of the money to spend a nice weekend with your family. Ebay the damn thing is what you should do
Really, I think the outrage, at least for me, and I am not a restore all the classics type of dude is this; you see the cab and you are like "wow, I have never seen one of these before, what game does it play?" Doesn't matter if the game was ---smurfy---, or not fun, I would want to play it and connect with history. Now you see it, and you are like, "that's neat", and then you step up to it and its nothing special, its just an ordinary mame cab with a small monitor and ---smurfy---, ---smurfy---, ---smurfy---, ---smurfy--- controls. The crime is taking something unique and special and then turning it into something common and ordinary.