I don’t see the harm of cheating in single player games but I don’t personally like to do it. I like to play the game in the way the Dev intended.

I have a few exceptions. I replay Final Fantasy 8 and Final Fantasy 10 regularly and I do abuse the built-in cheats. Speeding up is a must have now, can’t live without it. I also use the Get all items cheat to complete the sphere grid before doing dark aeons. I establish that I can kill the monsters that drop the items and then just use the cheat. It saves like 10 hours of repetitive non stop grinding.