Are you guys kidding?
When we were kids and the Superman movies (Reeve) came on, there was no better feeling in the world. We were at our most happiest.
I don't recall when Captain America came on that I felt anywhere the same level of happy. Not even close.
Superman inspired all of us to have super powers (I mean want to have) and to plan to be super heroes one day. Reading comics as a kid was really reading our options. LOL Seriously!
Without him I don't think there would be a comic debating forum at all. He's the spirit and epitome of "superhero". Even the effing music from the Superman movies inspire like nothing else. Goosebumps use to go through me everytime Superman was coming on or I saw a Superman comic as a kid.