@A K M Zahidul Islam
"Machines, electronic gadgets, internet, AI, robots and drones have replaced much of the need of human physical labour."

For rather "simple" work, where only one brain is needed, this may work out well. Nowadays, however, most interesting creative work, e.g. developing new technical systems or complex new business models addressing more and more complex needs, needs a creative team effort, which machines cannot (yet ?) provide.