I think you're gonna be alright.
In my opinion we'll have to go a long way before we'll see an unmanned 777 goofing off in the sky. The public is terrified of flying to begin with. One of the main reasons in my opinion why it won't happen for a while is that passengers look for that last bit of human connection. And yes while freighters don't have pax, the public on the ground still wouldn't be comfortable with that. People would rather place their lives in the hands of other humans, not machines. It's more relatable and therefore more calming in psychological sense. Just my $.02