Not to forget - a Brahmana is also called a "Dwija", one who is twice born. Nobody is born a Brahmana in his first birth itself - it is impossible, is what the Vedas say.
Brahmanathvam is solely based on the good karmas we do. Dear Prashant, by denying Brahminism, you are denying yourself a chance to accelarate your self-realization dude.
Wish you the best. But I must say, you're so polite.. :)