Emissions are projected to fall through innovation (and methane does not persist in the atmosphere very long, compared to CO2). Water use in itself is not a problem. We waste plenty on inessential things and that's no deterrent either.
Notwithstanding that since global population growth is going to stall anyway, demand for meat will stagnate as well. It could only be "unsustainable" on the conceit that it would skyrocket into perpetuity.
Plenty of things you enjoy and "don't need" necessitate emissions, water, and land encroachment. Increases in efficiency mitigate that. Recently, China's fossil fuel use has plateaued. That is quite an accomplishment because demand for energy had been growing fast.
nothing is less convincing in the face of real problems than handwaving everything with "other things also use water" and "don't worry, everything will just become more efficient"
Notwithstanding that since global population growth is going to stall anyway, demand for meat will stagnate as well. It could only be "unsustainable" on the conceit that it would skyrocket into perpetuity.
Plenty of things you enjoy and "don't need" necessitate emissions, water, and land encroachment. Increases in efficiency mitigate that. Recently, China's fossil fuel use has plateaued. That is quite an accomplishment because demand for energy had been growing fast.