Why Kashi as last home on earth

VARANASI: Scholars of Kashi say that the belief 'Kashyam marnam muktih' (dying in Kashi is emancipation) has been held by wise and enlightened people for centuries.
Retired professor of Sampurnanand Sanskrit University Padam Sri Bhagirath Prasad Tripathi 'Bagish Shastri' says, "Scholars from all over the country would come to Kashi to look for and discuss knowledge in the ancient days. That is why the belief."
Senior priest of Kashi Vishwanath temple Amarnath Upadhyaya explains, "Kashivas or living in Kashi has four elements-stay here, be in company of scholars, consume Gangajal and worship Lord Shiva. Lord Tarkeshwara, one of the forms of Lord Vishwanath, gives 'Tarak Mantra' to those who adhere to these four elements during their Kashivas to get liberated from the cycle of birth and rebirth."