Cheating helps me finish games.
Take Mass Effect 2, cheating left me skip the horrid scanning game. In FFX, it allowed me to just see the ending, I was kinda done with it after 50+ hours, but still wanted the ending. In Hitman, they allow me to save how many times I want, so I can explore the levels without having to redo the same bits over and over again because some dude rounded a corner at the wrong time (and killing everyone in easy difficulty level is much less satisfying than figuring out the puzzle.)
I think I've used cheats to mess around with games as well, like in CIV or simcity.
Anyway, I'm much rather finish a game then become a pro at it, I don't have the time or the patience to be a good gamer, and a lot of games don't have easy mode. I'd much rather have the ability to cheat than have achievements. But I thinks aren't made to be finished anymore, you play one for a few hours and then you skip to the next shinier one.