It's being deliberately gatekept from us by the wealthy, and by those who believe that no one should be allowed to have anything they haven't "earned".
The tragic thing is, to the extent that you're right, people will probably mostly kill other people who have nothing, rather than turning their anger and violence where it truly deserves to go: the rich bastards who want to own everything and prevent the rest of us from having anything.
There could be! But there currently is not. Nor is there any plan for that to change.
Are you fucking insane? If nobody had to earn anything and everyone had the same amount as everyone else, that's communism; you have succinctly described communism. It is of course one of the most famously productive economic systems ever devised, and one historically revered in the USA where of course we don't place any value on individualism or independence. "Take the handout you're given and be happy," is the official motto of the US, right comrade?
And of course never led to any wars! Everyone in the world just got along and was happy-go-lucky.
"We have enough for everyone, and it is being deliberately gatekept by the wealthy" does not logically equate to "therefore if we removed that gatekeeping we'd have Stalinism" without a whole bunch of extra steps not currently in evidence.
For instance, there's no reason why we can't say "sell your food for lower prices than the maximum the market will bear; the government will pay you to make sure you're still solvent" (this is called subsidies, we do it all the time). We also have a lot of antitrust levers at our disposal that have been growing rusty from disuse since Reagan's administration decided that monopolies were Good For Us, Actually.
I'm not proposing any specific solutions to this problem; I'm merely stating that it is a problem. If anything's "fucking insane" here, it's responding to that with ad hominem attacks and some very thick sarcasm about communism.
Furthermore, "communism" as an economic philosophy does not inherently lead to the specific circumstances that we saw in the Soviet Union during the 20th century. I know people tend to start crying "uh-uh-uhh! No True Scotsman fallacy!" when one points out that the USSR was not, in fact, doing a great job at communism, but it really wasn't. At first they tried, but it very quickly descended into a fairly standard authoritarian regime where economic decisions were being made not based on what was best for the people, but on what was best for the dictators and their cronies. (And funny enough, those same people don't seem to have a problem with the idea that the Democratic People's Republic of Korea is not, in fact, particularly democratic...)