[There's a creeping part of Al that understands that Tony is right, and that he does need to take good care of himself so as not to worry his friends, but the manner in which it's told to him does nothing except get him bristling.]

You don't-- How dare you think I ever want to make people afraid for me or walk into danger on purpose, you-- You don't know me at all.

[Furious, he stalks off in the opposite direction to Tony.]