I have several thoughts on this.
1) prestige hacks - I did the prestige hack for two main reasons. The first one is to save the time. I would eventually get there, but now I don't have to put in 30 days to get it. There is no advantage that I can see in hacking or not hacking the prestige. 10th prestige really only earns you bragging rights and a few titles/emblems
2) Other hacks - I think a lot of people want to see god mode, UFO hacks, and aimbots because of the illusion of it increasing the fun of the game. I think these would be a serious downfall to the game. If everyone is doing these hacks then the game doesn't become fun to me.
I think there are more issues to worry about than people wanting to hack or actually hacking. I'd like to see Activision and IW spend some time patching things in the game that effect game play such as lag.
My 2 cents... whatever that's worth. I don't accept refunds on my 2 cents by the way. lol