Why do they bother to ban MHers?

[TeH SaNdMaN]

i think blizz should fix the game exploits and just reveal the map to use cuz as some1 said earlier i hate teleing in the dark not knowing where ta go specially with a krap PC like mine i lag up and die alot if blizz improved gameplay and they're user's happiness then not only would they b making more money they also wouldnt have as many problems as they do 2day