If work was fun it would be called vacation. If you actually like your job and find it stimulating then you are lucky - myself included. You typically get paid to work because it’s something you wouldn’t do for free, but is useful to someone else.
If you're among the lucky, then maybe try some empathy?
Not to mention the article is about bad paying, abusing, no opportunity jobs, not about "fun vs work".
Not to mention that it's not true that "someone has to be a garbage man" (anymore so than a woman must "clean the dishes" in a household). People could be responsible for cleaning up their own shit, or take turns to do it.
The same way Japanese schoolchildren are made to clean their own school (toilets etc) - and in many armies, soldiers do that for their units too. So, no some specific person relegated to clean up others' shit is not "required".
Well, you are conveniently not a garbage man.