Eating too much meat can cause health problems and yes vegans get sick and die too. It is very true Mother Earth or nature designed us to eat meat. Killing one to save other is natures way. Suffering is also natures way and something all living things experience. You see this as something that is disgusting, but it is actually beautiful.

A Zebra can go through a tremendous amount of pain when it is eaten by a lion, but the lion will one day get sick or injured and will either starve to death or get eaten by a pack of Hyenas. No living thing avoids suffering. You think you are preventing suffering by only eating plants. Plants also suffer just like all living things. It might not be the verbal type of suffering we do but it is there. Look at a plant that has not had enough food or sunlight. Does that plant looks like it "feels" good to you?

This doesn't mean we shouldn't treat animals with respect even the ones we kill for food. This also doesn't mean you are avoiding suffering by only eating plants. Yes, there are environmental advantages to not eating meat because we have allowed our population to grow too large. Native Americans ate meat and during their time you could drink out of any or lake and the air was clean. They also had a tremendous amount of respect for animals for keeping them alive like most hunters and gathers do.

You really need to study earth and nature because your view of it is twisted and gross.