We've been vegetarians for 15 years and I most confess I don't miss meat at all. We eat a varied menu not depending on meat replacements but just good grains , veggies and fruit etc. It's more work to shop and cook but the fresh good food is worth it and becomes a habit. I try to buy products that are non leather whenever I can and try to support those companies who don't test products on animals. As for what would happen to all the farm animals... well the elimination of factory farms... maybe a return to small scale family farms...I know not everyone will give up meat and the animals that are raised for food will have a better quality of life. After travelling in S.E.Asia and seeing the chickens and pigs and cows have free run of the houses and farms at least their lives seem happier for a while and maybe that's all we can ask.