It's true that heroes are inspiring, but mustn't they also do some rescuing if they are to be worthy of their name? Would Wonder Woman matter if she only sent commiserating telegrams to the distressed?
However it is debased or misinterpreted, love is a redemptive feature. To focus on one individual so that their desires become superior to yours is a very cleansing experience.
Of course that is not the whole story, but that is the way with stories; we make them what we will. It's a way of explaining the universe while leaving the universe unexplained, it's a way of keeping it all alive, not boxing it into time.