Nobody is ashamed. Hinduism is not a religion in its narrow sense. It is a way of life. Even if I do not believe in any god, I am still a Hindu. Btw atheists existed even in Vedic period and were called "Charvakas"
No religious leader can issue any fatwa against me for not believing in any god nor can they deny permission to bury the dead or threaten me with social boycott (like the Christains and Muslims)