Because I naturally feel my communality with the entire humanity, and I can't even imagine being in position of robbing other parts of myself of their lives for this private, dead gain. The existence of any bourgeoisie is fully and utterly meaningless ‒ you don't even live, you just exist as a mechanical agent of The Economy
, and you're such a worthless slave to your technocratic god at that that you even start to own other slaves so you can, privately, serve this Moloch even harder. ‒ All for nothing.
Exchange (the root of economy) ‒ is oppression, and until there's oppression of one human being by the other, there could be no personal, and by stretch social growth, love, happiness and meaning in life.
Heil Adam! Gas das Kapital, war on economic classification of our species now!