Caste and Religion are the human creations buddy - Gods dont establish the religions, only the human folowers do ..
The Vedas are in danger because the people who knew them never documented them or never bothered to share them with others.
Talking about Brahmins, well - How many of them are leadning life like Brahmins? Forget meat eating Bozzing etc .. they are secondary .. but a Brahmin is supposed to be a role model for the society, again by profession and not by birth .. How many of the modrn day brahmins are role models? If they are not, why do we need them?