Vegan lifestyle and being against killing of animals?

ok firtstly do you eat meat. do you think its acceptable for a cow that would live about 30 years to die so you can enjoy meat. where an insect that would live 3 days to eat vegetables. the scales dont weigh up. to me its 100000000000 times worse for a cow to die than a bug or rat. and secondly i dont eat meat because i know that its bad for my health. trust me ive devoted my life studying this and its true meat and dairy is bad for your health i would go into detail but it would take to long. and the only reason the meat and dairy industry say eating meat and drinking milk is good for you is so you can give them money, get sick then give the medical industry money,this is the biggest scam in the history of the Earth.