There are a LOT of modern games released with modding capabilities, just not most of triple A games, one I can actually think of is Skyrim which still has an active modding community. CSGO, Dota 2, StarCraft 2, Arma, is other examples.

When people say "golden age" how i understand it is that they feel like it was "better" experience playing the games then, and for me it means i enjoy playing games just as much now as i did when i was 15.

Sure, game preservation sucks, nothing I have given any thought. But that is not what I am talking about, I thought we were talking about the quality of games and how much people enjoy playing said games, not the state of the industry at large, privacy, DRM, and the future of gaming.