You wake up at 8 in the morning, you go the local farm and work the fields for an hour and a half. 9:30 you go to your local factory or manufacture and work the machines as an engineer/mechanic, you do this for an hour and a half or 2 hours then go to lunch. 12:00-12:30 you shower and then work doing some political and administrative work for about 2 hours. 2-2:30 you head home and work on your personal art project. What a “horrible” existence eh?
Since in a Communist society your labor power would have been abolished as a commodity, it would free up a person to any pursuit, I mean you can indeed pursue one career but why be stuck programming for 6 hours when you can do so much more with your time. One of the biggest issues with careers is that it keeps you stuck doing one thing for years and decades, that’s not healthy except for those who truly find enjoyment in their careers. Like imagine a doctor also being an engineer and does temp as a bartender or some days works at a farm.