I'd agree with you if we reached peak development and unemployment was high. But there are people dying of hunger in the world, disseases that require funds to

I'd agree with you if we reached peak development and unemployment was high. But there are people dying of hunger in the world, disseases that require funds to find a cure, infrastructure to be payed for and so on. So if you pay your taxes, even if you consider your work "meaningless", your tax money, if spent well, is not meaningless. Sure it's better than them joining crime, but its a sad state of affairs and not exactly optimal. Some societies have been plentiful enough for a couple hundreds years to afford people not working/not net contributing, but those people would still be a burden, at least to missed development.