Operating within a natural law framework homosexuality is logically flawed. Nature would not seek to suicide a species through the inability to procreate.
Biblically or naturalistically, homosexuality is an utter abomination.
What could be more degrading to God’s good creation than a man depositing his seed into another man’s orifice?
Not everything operates at the individual level. For instance, dogs which have one gene for undescended testicles are more fertile than dogs that are aren’t. People who have one gene for Sickle Cell Anemia are resistant to malaria. Natural characteristics can have more than one effect and one can be bad for the individual but good for the population.
There is no evidence that homosexual behavior has anything but deleterious effects. Yet if some believe if it occurs because of natural impulses, it must be good.