I agree. In fact, I will admit that sometime when I am playing singleplayer, I will put in some cheats just fro fun to see all the stuff I can build really quickly. Or if I ever got bored playign a campaign level, I would just type "there is no cow level" and skip it!

I can't believe I still remember that.
But I have never, and never will hack. Because, like you said, it wastes
everybodies time!