The current edition of DSM does not include any diagnostic categories related to homosexuality.  Although the field of psychology no longer defines homosexuality as a mental illness, the acceptability of homosexual behavior by the general public is still quite low.

            Historically, there have been extreme prejudices against homosexuals, but that has not changed the incidence of homosexuality.  Notably, Western culture since the Victorian era has expressed the most prejudice against homosexuality (Comer, 1995), so much for enlightenment!

Comer, R. J. (1995). Abnormal psychology, 2^nd ed. New York: W. H. Freeman and Company.