I only do if it's for fun. I don't do it when I'm playing for the storyline or with a friend becuase it doesn't show how good you really are without codes.

I've never had a cheating device. I can't even find one anyway. If I was in the mood of buying one I would just to see what it has to offer.

Using it online? hmmmm It's easier to say that I won't use it online than trying to resist using it to be honest.

If you mean hack cheats, I love them.
Look up SSBM Action Replay codes, they show that cheating is a lot more than just winning the game.

Cheat codes no, Walkthroughs yes!

No not really. Cheating for fun is still a form of cheating.

Never used one in life.

Do you mean Game Genie, GameShark, or Action Replay type cheat codes? I have a Game Genie for Gameboy games, and I used it to form my team of four Mew's, a Mewtwo, and a Meowth on my copy of Pokemon Blue. I used to have a Gameshark for PSX I got as part of a package deal, but I'm not sure I ever used it. I don't have it anymore.

And if you're talking about programmed in cheat codes, well, I've used them a lot. Starting way back with the old Konami code on Contra. I've used the stage select codes on Sonic the Hedgehog (and the Super Sonic code on Sonic 2)... I've got a gamesave on GTA where I play through the game using cheats... ha, I remember calling a hotline back in grade school to get the blood code for Mortal Kombat. But usually, I try to beat the games without, but sometimes (like in fighting games where you have a lot of crap to unlock) a good set of cheat codes are a welcome addition.