The Whirling Dervish

I got into a conversation with someone about the origin of dance and they mentioned that there was this group of people who claimed the origin of dance was spiritual and that modern man is the one who has changed its purpose to that of attracting a mate.
I of course quickly pointed out that all kinds of animals dance and their purpose for dance is (as far as I know)always about mating so I doubt that the origin of our dance was spiritual.

Well on that note, I decided to study spiritual dance (ok watch some youtube videos) and the first spiritual dance I could think of was the whirling dervish Sufis.