The crux of the issue is that we are too many. So either population drops and we can all enjoy life or we survive with a lower quality of life because we have to watch everything we consume.
Meat consumption thus increases with economic development (even without going into what might be deemed excessive consumption, which is a fuzzy concept outside of health considerations). That is a fact worldwide (see for instance link I included in another comment).
Regarding quality of life, my point is that if we are forced to abstain from eating what we want (then not ravelling as we please, then live in smaller houses, etc) because we have to preserve resources then very clearly we are reducing our quality of life. And the root cause is actually population because what ultimately drives consumption of resources is population.