Because we are still alive. We are the LAST great civilisation. NO civilisation still continues from before 3000 BC . Baghor Kali Shrine is atleast 11,000 years old which has tantrik Yantra. Non hindus hste that we still live and proudly display our culture. I can write entire threads on how the Indus Valley civilisation practices, and practices from even before live in hinduism.
Be proud of what your ancestors gifted you, every hindu can claim 5000 years history atleast, an average white cant claim anything before 1000 AD at most if they have records preserved
Jai Hindu dharma