There's a difference between misery and limiting ones intake of climate-unsustainable calories. Not eating meat a few days of the week seems a small price to pay for allowing more people to live.
And walk me through how we limit population to allow resource excess, without artificial population controls and managing the economic impacts of a shrinking population, and I'll consider it.
In other words, you'd rather live in Bangladesh than the US you're apparently in? Why haven't you moved yet?