Should I use AI to generate images for commercial purposes?

If you have the budget, it's better to hire a person, because clients notice the difference and it can damage your reputation. But if you don't have the money or need to quickly sketch out a concept for approval, AI works fine as a temporary solution - the key is to rework or polish the final material afterward. Also keep in mind the licensing issues: check the terms of use for whatever service you choose, because some of them restrict commercial use.