UAVs & Turkeys voting for Christmas
I'm not sure if asking about the prospects of UAVs replacing "manned" aircraft on a forum dominated by pilots is going to result in a balanced discussion. It would be a bit like Turkeys voting for Christmas!
I happen to agree that there will be a need for a traditional pilot-aircraft relationship for any aircraft that carries pax, for the foreseeable future anyhow (civil regulators accept change very slowly). However; I think that sixth gen fighter aircraft could well have a cockpit in a trailer. Not to worry though, you'll most likely still get flying pay! 
CWD