Not stupid, just people searching for equality. Capitalism doesn't work either tbh, but communism just wouldn't work full stop.
Communism as an ideology is brilliant.
Everyone is equal with equal opportunity.
But in practice it just wouldn't work, due to natural human traits like greed and self actualisation.
Plus, say communism was in place, there'd be no incentive to innovate and think of new ideas. Put it this way, if communism ruled, there'd be no iPhones, smartTVs etc. If that's a good thing I dunno.
This is just off the top of my head