Well, I wouldn't mind if most restaurants had robots instead of waiters and digital food ordering (like tablet on a table). Human element I usually need is people I came with, not waiting staff, I don't remember when I had any useful input from them (they don't know my taste and their goal is different from mine). Nice looking smiling human per hall, who can come up to our table once and ask if everything's ok would be enough. Maybe in top fancy restaurants it's not the case, but 90% of restaurants aren't in that category where I live.