This is rather an absurd argument and speaks more to the scarcity of natural resources.

I can only speak for myself, but in a world of universal basic income, I'm perfectly happy to pluck the strings of my guitar, play my piano, go for runs with my dog, play tennis etc. I don't believe there is any greater purpose to existence then what you can create for yourself.

Since my contentment comes from performing the actions themselves, whether or not a artificial intelligence can perform them better than me is simply a meaningless question.