What do you think about cheaters?

I think that a game without difficulty can't provide you the satisfaction to overcome these difficulties, this is why cheating ruins the game as much for you as for the other players. You won't have that much fun and they probably won't appreciate always losing because another player cheated.
Cheating seems to be a thing in games where there are rewards systems, but before considering cheating, you may ask yourself what you value the most : fun or reward ?