What do christians have against gay people

[OnlyNatural]

Argueing homosexuality is 'natural' doesn't really help your case as cancer, schizophrenia, sickle-cell, MS, etc. etc. are all 'natural' also.

Yes, those illnesses are also examples of things that occur naturally in humans. I would not consider homosexuality equivalent to a disease, however. Diseases cause significant harm and suffering, and even death, for the individuals who have them. Being gay causes no such thing, if you exclude suffering due to bullying and prejudice that comes from outside the person.

Sickle cell anemia is an interesting case... in the homozygote it's extremely likely to cause death, but in the heterozygote it actually provides immunity to malaria, quite the benefit in some parts of the world.

Nevertheless, homosexuality is not a disease. I suppose you could argue that it's a mental illness, but as a society we've already been down that road, and found it to be untrue.