Hussar
Legend
Heck, in my case, Jammy was a dickhead. Happy homelife, but, he was a rebel - drinking, getting into trouble, the whole nine yards. Not evil, but, a troublemaker. AKA being a teenager. 
But, then again, you could take up adventuring to protect your happy family - my Hoard of the Dragonqueen paladin was exactly that. The dragon armies threatened his family and his home. That's why he was an adventurer.
One could easily ask why Superman adventures. Or Wonder Woman. Or Iron Man. Or Thor (although he does rather have some family drama) There are lots of adventurer inspirations that aren't Batman.

But, then again, you could take up adventuring to protect your happy family - my Hoard of the Dragonqueen paladin was exactly that. The dragon armies threatened his family and his home. That's why he was an adventurer.
One could easily ask why Superman adventures. Or Wonder Woman. Or Iron Man. Or Thor (although he does rather have some family drama) There are lots of adventurer inspirations that aren't Batman.