However in many countries it is sacrilege to challenge religious beliefs, so much better accept the beliefs as facts unless you are very sure who your audience is and know how they will act.
I guess there are places where you could die for challenging religions...
OMG! To open the subject of homosexuality without bothering someone is delicate, it is like talking about politics or religion.
(That's new!)"anal worm that feeds on semen"???? 
This is outrageous!
However, I don't think it's a disease. They are sexual preferences. The LGBT community (I think it has more initials) has been the victim of attacks, persecutions, and ridicule.
Once a master was asked why there was so much increase in homosexuality on the side of the male sex, and he had explained that it had originated from the effect of birth control pills in its early years.
Then people will say that homosexuality is a method used by governments to control population growth...
I wonder, if there was a vaccine that would not cause any harm to the human body, to eradicate homosexuality, would homosexuals take it?
This could be a good topic for a post 