Why do we ban?

[Hannibal]

i was disappointed to find out at the end of the of the post that this is just another appeal, you should have seen lyth's ones, with ~26 pages of google docs and a few more threads on forums...

"Why do we ban?"
It's a question we've asked ourself quite recently, i'll give you a few example why:

snakelancer the guy cheated ~67bils and while every admin said he'll never get to play the game he still believes after 6 months he's entitled to an unban like everyone else who's been in his position (banned)
exodite circumvented it at least once that i know of, he's keep telling us how will abuse/exploit x or y after he'll get unbanned

so a fair question "Why do we ban? " if we are going to unban them ?

I think its time to stop unbaning peoples or they'll never stop doing stupid shits because the consequences for it are manageable