Your avatar looks like it's got a decent gurn in it.
Mind you, who am I to talk.
People like to see a combination of skill, passion and fight on the pitch. It's only natural that folk want to have all those qualities visible in the manager. It creates a closer bond between supporters, who part with their hard earned, and the manager.
I know a couple of people who saw him behind the scenes at Wigan, so know what he's like behind closed doors. It's good that others realise he's not the soft touch that his normal public persona might suggest.
It's like the opposite of yourself really. I know, from conversations we've had in private, that beneath that grumpy, angry exterior there's a really decent bloke.