No need to get rid of MAME completely Tin! A quick round of Dig Dug or Frogger(*) every now and then is good for the soul
Though I hope you aren't really stacking them over your head, I will say that as a
collectable, vinyl records are the superior format for music. As you probably know, if stored properly vinyl can last indefinitely whereas all these synthpop CDs I've bought over the years will eventually fail at some point to disc rot. 500 years from now, someone will be able to listen to the Ruby Red Mix of Don't Say No on your Heavenly Action L12" that you saved for sake of posterity!
Disc rot will also eventually destroy any disc-based video games I own, like PlayStation games. In fact, some collectors are already finding signs of disc rot and/or pinholes on Sega disc-based games. Similarly, old cartridges like Nintendo games will eventually fall to bit rot or other electrical problems (bad capacitors, leaked batteries, etc). VHS and cassette tapes deteriorate. Laserdiscs also get disc rot. DVDs can also fail due the separation of glue that holds layers together. Blu-rays - disc rot. Vinyl is forever.
(*) or Q*bert or Ms. Pac-Man or Centipede or... lol