According to two dermatologists, most Americans actually shower far too often. They go on to point out that daily showering or bathing is a result of cultural preferences or societal norms, and that humans really only need to bathe ever 2-3 days.
Obviously these dermatologists wouldn't recomend not showering for 60 years, but who are we to judge this man's life? He has found happiness in the Iranian desert and that's all that matters.
We encourage everyone to think about what they truly desire in life and we encourage everyone to follow those dreams. If this man is happy living in the Iranian desert without bathing, more power to him!