Inertia and sunk cost a bitch to break; I think many gravitate towards tried and tested, toward perceived safety; they think one way works for their parents and their neighbours, but don't know whether everyone living above their means or not, saving a dime.
Before the 9-5 did reward you, it was the logical option from a time vs reward standpoint, today it's not, and some are figuring it out, that's not to say we all go the nomad way, job hop, bla bla
Do we need people as employees? Yes, that's the beauty of division of labour. We all find what we are best at and get rewarded. Do we need people to consume? Yes, capital is redistributed this way, and we discover new products and services, encouraging entrepreneurs to make better stuff to get some of that capital.
Find what you're good at, enjoy it and reap the rewards, thats how we all win