Superheroes are our modern myths. They provide ideals that we aspire to and convey larger than life stories of struggle, triumph, perseverance, and hope. Like any good science fiction, they are allegories through which the pressing issues of our times can be explored (Watergate in the original Secret Empire in Captain America, racism in Weird Fantasy #18 by EC Comics).
Plus, comics have an unlimited budget. Movies are just now catching up, but comics can still beat them in terms of mind-blowing visuals.
And the end of the day, superheroes entertain me and inspire me. I've read many bad ones, and I've read many excellent ones. Those that have stuck with me throughout my life. I've cut back on the number that I read and I am definitely enjoying being able to have them on a tablet (though I do miss the tactile feel of holding a comic book). But I keep coming back and am so glad my kids are picking up that love. The girl especially is a fan of Tiny Titans and graphic novels.
If you can say thank you to someone, it's time to do so.