Consumerism is a cornerstone of economic growth. If there wasn't a demand for the various goods and services that we all produce our collective standard of living would be quite low. I agree that a balance should be struck and at our current pace we are turning our planet into a dumpster fire, but 'not spending' is political kryptonite - how are we going to deal with the people who will (inevitably) lose their jobs?
How do you make a living?