Those damn shoes HURT. Michael really ought not walk around in those stupid boats when he's now built for digigrade struttin'. Idiot.
You can't really do him a favor without getting some sort of thinly veiled insult in return. He thinks favors are tricks. He might enjoy himself, but he so sure you're just trying to manipulate him that it just taints everything he does. In a way, he's more capable of dealing with assholes than truly nice people.
For
The other Half-Dead there is Lamia, who is learning to put up with Michael's ridiculousness by just not reacting best she can. A mental shut-down and denial is, she thinks, a good way of dealing with that abuse.