Look kids, its as simple as this. Gay, Lesbian, Bisexual, and Transgendered (sometimes also included are Queer and Intersexual, check
http://students.berkeley.edu/sas/geneq/lgdefs.htm for definitions) people consider their sexuality to be a part of themself - to be natural, self affirming, and in absolutely no way "wrong."
Some Christians, Psychologists, etc. believe that homosexuality is actually a psychological pathology and a genetic defect. In fact, people who subscribe to these theories and find themselves to be attracted to people of the same sex describe themselves as suffering from an "affliction" which they consider themselves able to be "cured" of. This is what shamelesscondor is refering to.
Now discuss.