Why Is It Unnatural To Merge Into Brahman

“One's real dharma, or occupational duty, is explained by Shri Chaitanya Mahaprabhu. Jivera 'svarupa' haya-krishnera 'nitya-dasa': [Cc. Madhya 20.108] every living being is an eternal servant of Krishna. That is one's real occupational duty.” (Shrila Prabhupada, Shrimad Bhagavatam, 7.5.51 Purport)