Is becoming a vegetarian/vegan worth it?

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I try not to restrict my diet in any way in case I am in a situation where I have to eat something for survival. I knew a guy who ate meat for the first time after 5 years because he was in a different country and ended up in hospital for a week.

Going vegetarian or vegan to me seems like you live in an ideal world where you will always have access to the food you are used to.