Let me give you a hint: In the victorian era everyone worked 16h/day and even children were in coal mines. And after that people were afraid electrification and machinery would create 40% joblessness.

Robotics makes the world more productive. More production means more wealth. The wealth only is worth something if people have means to create demand for the supply. It happened before, it will happen again.

Pessimists sound smart, optimist make money.