well, your moral fiber ends up a bit different than the moral fiber of regular folks.

for example, in the crapass movie "Highlander:Endgame", Methos and Joe are breaking Duncan out, and in the car afterwards, Methos says that he got Duncan's sword (which had been nicked by the guys holding him) back, and hands it to him.

Duncan: There's blood on it!
Methos: I didn't say it was easy!

And that's just cool with Duncan. Also, one of his best friends is a thief, and one...well, he's hard to describe, but he's a shady fellow, and then there was the multi-state, three-immortal crime spree where Duncan was the "dig up the revived bodies of the thieves" guy.

But he's got his code, and he sticks to it.