1. A large portion of agricultural land is only suitable for animal farming. One can always argue that mountain slopes can be re-forested, but I am afraid this does not facilitate skiing.

2. Most vegetarians consume dairy products. To produce milk you need cows (or goats…), and you regularly get a calf, which grows into beef.

3. Many vegetarians are also consumers of organic farming produce. Organic farming is dependent upon manure (some will challenge this) and nitrogen-fixing crops, among them fodder legumes. Cattle again comes into the picture.

Conclusion: vegetarians need meat-eaters.