Is it possible to imagine humanity without a modern understanding of money?
The rather famous political economist Marx claims that the wage labour relationship contains within itself the transcendence of that relationship. This is in part as the only socially productive property a worker has consists in the giving away of themselves for a mess of postage.  This suggests a non-engagement with owning socially productive property and instead an emphasis on usufruct. Similarly the commodities of the wage are used (consumed) rather than hoarded.

In Marx’s suggestion that the proletariat can abolish itself, the wage, profit, Capital—in general “the value form”—the abolition of money as we understand it in Marx or contemporary use would necessarily be abolished. Movements of socially useful stuff and services would somehow work on the basis of capacity and need. There might be a mediator, but it wouldn’t have the current functions of money.

Apart from a few very short term instances during revolutionary crises, and generally without ordinary productive activity, there’s no empirical evidence for these relationships; and, there isn’t sufficient material to move beyond large weak concepts like “love,” or “solidarity.”