I think that in 30 years, humans will not work. AI will replace software developers, doctors, lawyers, accountants, finance, etc. Robots will replace surgeons, gardeners, cooks, cleaners, construction workers, manufacturing workers, etc.

All humans will live be provided Universal Basic Income. Housing, food, clothes etc. will all be made by robots and given to humans for free.

The only jobs for humans will be dating, procreation, taking care of their offsprings (with help from robots), exercise and recreation.