Alined scanlines aren't simulated DEGRADATION. It doesn't hurt the eyes and the image output on a Pc monitor looks terrible without it. A real arcade monitor is the way to go if you have it. I bought one and it's incredible, but now the image output from mame is almost as cool on my 21' crt pc monitor. Maybe I'm wrong, but I think you're just trolling.
Also, you can have rgb out on the Nes with a little mod.