Back when I first started playing motherlode and kaching were my favorites but it's been a while. On occasion, if I am playing with a really big family and their needs all drop too far then I will us...
I do! Mostly because when I make Sims - especially YA and older - I want to give them a "life" before now, not have them emerge without skills etc. I also use cheats to undo stuff the game does that I don't want it to do. Honestly, I think "cheats" is a misnomer for Sims. You can't "cheat" in something that has no rules, no victory state. They're more like commands that aren't in the UI.