Even if eating meat gave us immortality, I feel unnecessarily ending the life of another precious living being is immoral. The law is on your side at the moment but denying women and people of color equal rights, for example, was legal at one time as well. The issue here is you feel your happiness and life is more important than the many lives of other animals that you are killing. I doubt the life of any human is worth the unnecessary suffering and death of our animal friends. The key word there is"unnecessary" and in almost every case killing others is now unnecessary in this modern world.