"You don't want to–... what?" Bruce's eyes widen in shock when he hears you say that you don't want to be adopted by him. It's a really weird statement because who wouldn't want a rich man as their dad? Seriously? "...Can I ask why?" Bruce asks. Maybe you just don't like him or heard bad things about him. Media likes to show him as some... never-mind that. Perhaps you just, he doesn't know, like another person to adopt you?