The highest percentage of land use in the world is for raising livestock and growing the food they eat. Most of the caloric and protein intake of food is plant based across the world, though. Imagine if you reduce the livestock land use and convert it to growing food that will feed more people for cheaper.
I, like
InsaneHawkJJP, have been eating plant based for almost 7 years. I consume more than enough protein on a daily basis and don't miss eating animal products at all. It wasn't as hard as I thought it would be to commit to this lifestyle, just have to have willpower and a wife(no pics) that is handy in the kitchen.