PS2 games on PC run fairly good if you have a high clock speed and for those complain about graphics, you do realize that a dedicated modder can use Texmod to override texture files giving the games higher res textures, so if your bored enough you can push games further with again texture mods using texmod and like, done it for a few games, hell some high res texture mods exist for games like Final Fantasy 7 and Legend of Zelda Orcarina of Time
Graphics arent everything but emulation of SNES , N64, PSX, PS2 etc give PC gamers the largest gaming library of all time on one machine
Some what off topic but heres a revamped Zelda on emulator
example
In the end it comes down to Gameplay and Story, and very few games top the old school Metal Gear Solid Series, and sadly the few PC ports there are dont run properly on modern hardware so emulation is the only way, it is what it is, emulation serves a purpose for those to enjoy classics,
Ive yet to play an RPG like Ogre Battle 64 Person of Lordly caliber on PC without emulation, or Games like Metal Gear Solid or Metal Gear Solid 3 Snake Eater, without emulation i would be unable to enjoy such fantastic games, some people like shiny graphics (im one of them) however comparitively speaking most modern games are epic fail in terms of story and gameplay, compared to games from the past.