I am a firm supporter of weeding-out crap. I am actually trying to make a mame-rom set list that only includes certain, non-crap games; specifically, I am weeding-out all of the non-English Mahjongg/Quiz games, all of the games with nudity, all of the non-english clones without unique content (other than the text in a different language), and all of the non-working roms. I also want to identify all of the remaining games that have realistic violence so I can play them, but keep the little ones away from those games (My toddler does not need to play Mortal Kombat).
This would leave only games that are playable and suitable for families.