I guess you should collect what you like, whatever gives you enjoyment, not to just make a buck. Im pretty young for what I collect. Im 27 and I own lots of stuff from the 50's (53 chev,gas pump,pinball,pop machines,jukebox,etc..) and I wasn't around at that time, but I love that style of stuff. I probably got the "bug" from my dad, as he has lots of cool stuff like that. As for people not remembering old stuff in the future. My parents collect old furniture from the 1800's (and they weren't around then). That stuff is still very collectible. So if you like it and it makes you happy; Get it.