AProudLefty
He cries for attention. :)
0% of people are born homosexuals.
The person's behavior is abnormal.
Indeed, it is not necessarily a negative thing for something to be abnormal, but with regard to homosexuality, it is definitely a negative thing.
A main negative with regard to homosexuality is that it is a completely fruitless action (IOW, reproduction is impossible). It is also an entirely selfish act, as it yields nothing other than a temporary self-pleasure "high" (akin to one "getting high" via drugs). That sort of behavior is quite destructive.
Are you saying infertile men and women are a negative thing?