Should Homosexuality be Classified as a Mental Illness, if only as qualified by it's rarity?

I have been pondering this matter for quite some time; given Homosexuality's minority representation, coupled with its genetic underpinnings, would it not be out of turn to qualify it as a mental disorder?

P.S. I am not attempting to incite violence or express a political or religious opinion; I am merely opining and hoping to incite discussion.