I am definitely a hero to my son, arguably the most dedicated he'll ever have. But he's never really been the Jimmy Olsen to my Superman; he's the J. Jonah Jameson to my Spider-Man. Some days I'm not sure I'll ever see him show me the common courtesy he'd show a stranger, to say nothing of actual respect. But I'm not going to stop. And that's heroic, even if he never recognizes it.
But then there's the second part of the inscription, which is actually true and heartwarming. My daughter has mentioned wanting to marry me a couple of times in the past (though it's been a while; she learned and accepted the impossibility just fine). She's got a healthy love for both of her parents. Her faith in me inspires me to live up to it.