Medicine (and millions of other people) has already proven that we don't need meat to survive. We have plenty of alternatives now.
But we are addicted to meat - because it gives us pleasure. But then you have to ask yourself, is it OK for sentient beings to horribly suffer for us[1], so we can experience some pleasure that could be easily achieved by consuming alternative foods[2] and shifting our perception. Consuming meat is also not the best way to efficiently feed the world.
Here is what Dr Neil Barnard says about bacon:
Power Foods for the Brain (17min) https://www.youtube.com/watch?v=v_ONFix_e4k
[1] Earthlings - https://www.youtube.com/watch?v=rc2oizSsmUs (I challenge you to watch this and not think 'WTF')
[2] Beyond Meat - great presentation by Ethan Brown: https://www.youtube.com/watch?v=4x8jfiaLCPY