Yeah, sometimes I do leave here feeling a bit like that.
Jokes aside, I am a sucker and sometimes feel sorry for newcomers to our warmly welcoming paradise
Last year for giggles, I myself ran Gauntlet Legends at 100% on a 15+ year old computer built out of bits - core2duo E8600 with 4GB RAM, slightly overclocked to a bit over 4Ghz.
For MAME, single/duo core performance is more important than multicore.
As other have mentioned, if you are into that style of gameplay, there are better games. I even prefer original Gauntlet.