It disheartens me whenever I read more and more people say that the old gameplay is "unplayable", when really that just means they're unwilling to adjust. But what can you do? It's the never-ending cycle of life and young vs old.
We usually think that that our golden years games are nothing but hits, but lets be honest with exception of few games like FO that aged well (especially if modded) most didn't. And without the nostalgia googles they provide tooth grinding interface and subpar gameplay (like most strategy, FPS...).
Today there are soo many new games and not enough time to play even the best of them, so its not about adjusting but whether you should put the effort, and this is should be answered on per person\game basis. For example I have no intention playing Wasteland 1, it plays worse then my school project..