There was a point when comics were considered to be mainly of interest to kids, and it was decided that kids could relate more to someone their own age than an adult. So suddenly all these previously grownup comics were lousy with sidekicks: Aquagirl, Aqualad, Robin, Kid Flash, Speedy, Stripesy... the list goes on.
When writers don't know what to do with a character, they build up the supporting cast and universe to kind of hide that fact. After a while, you can no longer see the character for the underbrush. When that happens, you need to bring out the weed-whacker to clear some of that away so you can focus on the main character.
Life isn't about the final moments, it's about the journey, it's about process. What makes 'Rocky' work as a movie is seeing him working his way up from the streets to the arena and the fight of his life. You could just show that fight, and it would be great, but seeing that journey illuminates that fight and adds profound meaning to it.
Here's the miracle: I grew up thinking, 'Wouldn't it be great to write 'Superman' someday? Wouldn't it be great to create my own show, or work on 'Lensman,' or 'Forbidden Planet?' Those were very literally the goals I set for myself, the dreams that I thought I didn't have a chance in hell of ever actually achieving. But it's happened.
For a lot of people, Superman is and has always been America's hero. He stands for what we believe is the best within us: limitless strength tempered by compassion, that can bear adversity and emerge stronger on the other side. He stands for what we all feel we would like to be able to stand for, when standing is hardest.