This, right here. Work and 'productive' employment are not the natural condition of humans. People who worry about 'purpose' should be super careful that that isn't their Capitalist brainwashing talking, because in this day and age, with the veritable flooding of Capitalist propaganda through every avenue, including the obvious (advertising, cultural productions) to the least suspicious (seemingly simple interactions with family/friends), there's a high chance anyone who thinks they need work has been thoroughly tricked into loving the fact they're a cog for the profit of a few.

People who say "I would feel bored without work" are great for the Capitalist. They have been conditioned by the system to love work, and that's not good. The ethical question about programming a robot to enjoy being a slave has already been answered by the Capitalists and their answer is "We'll do anything for more money." People today have already been 'programmed' to love their work, and it ain't a pretty thing. It's the root cause of 99% of these posts about how AI is going to make us so bored we kill ourselves or whatever. Yeah, if you've been told by your culture/society that you must work to feel good, then the end of that requirement could feel a little frightening and horrible.

Or it could feel like withdrawal from an extremely nasty drug, and once you get over it you might find you like life without Capitalist-purpose looming over you to be pretty damn good.