For now I have never owned or used a bitcoin ATM because there is no bitcoin ATM machine in my location. However, if it is an area where bitcoin ATMs are available, and you are interested in using a Bitcoin ATM, it is advisable to do more research about Bitcoin ATM operators in your area, look at the fees involved, and consider the necessary safety factors before making a decision.
Yeah, I think the best use case for Bitcoin ATMs are actually when you are traveling to another country.
I don't think a local ATM would be too useful, as you would be able to get a cheaper rate at your local exchange.
I see Bitcoin ATMs as convenience shops, you just get some fiat from the country you are visiting, without any banks involved.