No, YOU don’t know the meaning of the word nostalgia. Play an old game because it’s still fun to play is not, in and of itself, nostalgia. My 16-year-old is playing SonicCD as I type this and he loves it. He’s already beat the game twice. Should I explain to him that the reason he’s enjoying it is because he’s nostalgic for a game … that was released over a decade before he was born? 
I’m sorry you have such a limited imagination that you can’t picture other people enjoying something you’re no longer capable of enjoying just because it’s old.