I play as many old games as I play new games, so nah, it's fine with me, admittedly it depends on the game quite a lot for example I can play both System Shock 1 and 2 without problems but I can't stand the original Deus Ex, I can play Fallout and Planescape Torment without problems but the D&D classics that aren't Planescape? Nah, too complicated and boring, Legacy of Kain Soul Reaver? yes, Tomb Raider? No, and so on it's hard to tell what make some games still feel decent when compared to other nearly identical games but some games just fucking work and feel good.
Also I find some old games to be more playable than new games, for example I like the original Fallout, I couldn't play 3 or New Vegas for more than 20 minutes, they are just boring as shit to me, it's all personal taste, also I fucking love classic platformers so everything on the NES, SNES and Genesis is like gold to me but I won't play modern shooters, not because I don't like them I merely have never bothered trying them, nothing about them calls out to me, also old adventure games are still gold if you like modern point and clicks.
All that being said I grew up on the N64 and Gamecube so a lot of these games have 0 nostalgic value to me, I'm just able to get over graphics fairly easily, for example every single game I mentioned in this list with exception of the generalization of NES, SNES and Genesis are games that I only got around to play some time in the last 4 years, so they had 0 nostalgic value to me and I still liked some of them quite a bit, for example Max Payne 1 & 2 I played 2 years ago and I loved both of them to pieces, but I fucking hated everything about Max Payne 3 because that is the single biggest piece of shit game I have ever played and I can't believe some people actually like it because it's the only fucking game that I genuinely hate, it just makes my blood boil.
Anyway I think it's all about taste because some old games are able to fill gaps that no new games are covering, it's the reason why Kickstarters that promise to give you more of that old game you liked are so successful, because the game industry today is not concerned to fill niche markets that the old games had no trouble with trying, just look at Rainbow Six and Ghost Recon, how they started being really unique tactical shooter and slowly got homogenized into being the same thing that all other shooters are these days, you went from controlling a couple of squads to just 1, to just 2 guy and then just one guy until they practically didn't exist as tactical support, that's what happened to everything and why I still play old games I hadn't played before, because they might just do something that I might only be able to see in that particular game.