[
believing that homosexuality is an abnormal human condition is not a phobia---it is a belief based on religious teachings and biology.
Okay, let's eviserate this stupidity.
First, homosexuality exists in the animal kingdom. When a male dog humps another male dog, all the other dogs don't whip out bibles and start calling the dog nasty names. So, sorry, Science and Biology give your homophobia no solace. nature just doesn't give a flip about your hangups.
So that leaves you with "religious teachings".
Okay. Religious teachings say "Thou shall not suffer a witch to live". And for centuries, they burned women and sometimes men for "witchcraft", which could be anything from acting a bit odd to knowing what herbs and roots made good medical treatments. And then someone finally figured out, "Geezus, this is the 18th century! There are no freakin' witches."
At least in the advanced world. There are third world countries where they still kill women for being witches. Heck, Sarah Palin's church even invited a witch-hunter to speak.
Slavery, Genocide, genital mutilation, all these things have been justified as "religious teachings" at some point. And thankfully, sane, rational people reject them today.
So do you really have an argument against homosexuality other than "I think it's icky." ?