I think its you who are sick. Non-Veg food goes way back earlier than Veg food for humans, which came after Non-Veg.
As for killing defenseless innocent animals, that's just your sick mentality. Do you think that the wheat you eat or the salad that nourishes you, it doesn't have any life & is not defenseless or innocent? If you don't know that plants also have life, then you need to go back to school kid!!
And the very milk you use, that's taken from cows & buffaloes depriving their offsprings of their motherly milk!! How about that??
There's nothing sick or wrong in eating non-veg, its the natural process. Everyone in the nature's food chain eats the ones on the step lower than them. Would you care to tell a lion or a tiger or a leopard etc. that they gotta stop eating non-veg & convert to veg? *roll eyes*