I thought I'd share this:
Batman has always been my favorite, with Spiderman and Superman and Wolverine close seconds. I thought of it this way. You know that Shakespeare quote, "Be not afraid of greatness: some are born great, some achieve greatness, and some have greatness thrust upon them."? Superman was born to greatness, even if Krypton had hadn't been destroyed he would have been a great man on Krypton. Spiderman had greatness thrust upon him, he would've been an ordinary man with an ordinary life if he hadn't been bitten by the Spider. Batman though . . . Batman chose to be great. Superman and Spiderman had no choice about bearing great power, and, thus, great responsibility, and it's almost like they were compensated for that by having some measure of happiness, Superman with Lois and Spiderman with Mary Jane. (on and off) Batman has no superpowers, no great responsibility to the people of Gotham. Every night he goes out he chooses his path, chooses to sacrifice his own happiness for the good of the people. He could, at any time, choose to abandon being Batman and retire to live in luxury as Bruce Wayne, with none the wiser. But he doesn't.