There are many good reasons for reducing or even giving up the eating of meat:
Futures Forum: "If you want to save the world, is veganism the answer?"
Futures Forum: "If everyone turned vegan, would we be healthier and happier?"
Others would say it's actually about the right sort of meat:
Futures Forum: The Calf at Foot Dairy > making the world ‘a better place for cows’
And that eating meat is actually good for the planet:
Futures Forum: A world without livestock farming makes no sense
Futures Forum: Climate change: the role of livestock and agriculture... or: "Can steak save the planet?"
And so we are talking taxation:
Futures Forum: Climate change: and taxing meat
An academic study has just come out looking at the issue:
Health-motivated taxes on red and processed meat: A modelling study on optimal tax levels and associated health impacts
The press has caught on:
Food Politics: Should Meat be Taxed like Sugar?
Should there be a tax on red meat? - BBC News
Taxing red meat would save many lives, research shows | Environment | The Guardian
Could a 'red and processed meat tax' save thousands of lives? - NHS
The Cato Institute puts the case against:
Economists' New Proposal to Tax Steak and Bacon to "Save Lives" Is a Really Bad Idea - Foundation for Economic Education