Well, it's terribly wasteful in terms of resources. And so, compared to just using plants where possible (like with alternative dairy, plant-based meats etc.):

Well, it's terribly wasteful in terms of resources. And so, compared to just using plants where possible (like with alternative dairy, plant-based meats etc.): 1: it's not sustainable ecologically (compare: https://www.drawdown.org/solutions); https://www.drawdown.org/solutions); 2: it wouldn't be sustainable economically if not for the subsidies