>>109212915Because Superman has always had a bit of poignant loneliness at the heart of his character. As Superman, he's the Strange Visitor from the planet Krypton. As Clark Kent he's a mild mannered reporter.
A lot of his Silver Age stuff were Twilight Zone psychodramas for children where everyone he loves turns out to hate him because they've been replaced by robots or he's forced to hurt their feelings as part of some master plan to capture the bad guys.
Superman doesn't wallow in loneliness, but it is a part of his character.
