What you think of as "communism" bears little-to-no resemblence to the post-capitalist society that Marx envisaged. The russian revolutionaries may have espoused themselves as such but the reality is that society at that point was not ready to take that step(*) and they were not the people to do so.
Likewise what you think of as "capitalism" - given that the USA (and other) governments have repeatedly stepped in to prevent capitalist monopolist oligarchies forming (the railway and oil robber-barons being one example) or break them up when they've managed to establish a toehold(**). There's a new set emerging which have managed to get further than than the last few times, but the reality is that unfettered capitalism leads to abject misery for most and lack of progress for all.
(*) Communism requires a surplus of production and of labour, such that there isn't enough actual work for people to do. This is close to what we now have in western countries - which without adequate backstops in place leads to large amounts of un(der)employment and the political need for "make work" schemes(***)
(In the old days unemployment used to be hidden by hiring people into government service or moving them workseeker to sickness allowances. These options are frequently less available thanks to the breach of the social contract that started with Ronald Reagan's welfare slashing efforts in California in 1970 and gathered pace with California's voting in of proposition 13. That malaise has spread far and wide since then, with the rich getting richer and the poor increasingly being systematically disenfranchised through institutionalised racist and classist policies.)
(**)Standard Oil, AT&T, The Gettys, Railway companies as mentioned above, Boeing (yes really: Look up the history of United Airlines and UATC), various others over the years.
(***) If you start with the notion that a basic allowance will allow creative types to flourish, accept that some people will piss it against the wall and somehow address the raging anti-intellectuallism that's destroying the USA and other countries so that people _want_ to learn, then there's a lot of mileage in it.
The important part is that a just and fair society doesn't let people sleep under bridges or in shelters where there's a high chance of being robbed/beaten/worse. It helps them rather than demonising them.
Interestingly it's pretty clear that violence levels worldwide are at an all-time low, despite what's seen on the news (better media coverage means that stuff that was ignored int he 1970s is big news now) and that tolerance for violence is similarly decreased. Despite rightwing dog whistle calls to the contrary, things _are_ getting better in the long term (as in centuries, not decades) - provided we don't poison ourselves in the next 50 years(****) then there's still hope.
(****) the biggest risk associated with atmospheric CO2 spikes and methane breakouts levels isn't ocean level rises. It's anoxic dieoffs resulting in the extinction of pretty much every land animal larger than 40kg.