Don't get me wrong. I'm not a communist, and I'm not completely against capitalism. Capitalism can be beneficial, especially in distributing resources. And, I understand and agree that capitalism is not a zero sum game (at least at the instant of the transaction). But, transactions are rarely equally beneficial. In fact, in the long run, transactions can actually harm one or more parties, especially those indirectly affected. And, based on my observations, it seems easiest to 'win at capitalism' via monopoly, deception, manipulation, trickery, and abusing intent.
Furthermore, what do we with those who are just unable to produce anything of value? it's implied that they just die.
So, generally, I'm not a fan of it (although I've also made a lot of money from it). But, what I dislike even more is the cop-out that it's somehow impossible for us to do better - that somehow 'natural laws' prevent it.
Capitalism doesn't stop a person from donating to those people. Indeed, that's what happens through the government.
Even if there is no money involved, you may repay such favors in the future when they ask you. So it's more like borrowing a favor.
> why can't we all have a society where we all act as neighbors
Why can't we have that within capitalism? What does "act as neighbor" even mean? Does it helping one another for free? That already occurs for small tasks.