Liberals like to say that homosexuality is a 'natural thing' since some people are born with that tendency. I'd say, some people are born with anti-social behavior tendency, it doesn't mean we can accept what they do if they follow the tendency.
Precisely. It actually relates to the classical Christian doctrine of original sin (long ago forsaken by liberal Christians).
If every human is born a sinner....and each person is unique, than each of our patterns of temptation are slightly different. Of course we all have common sins, but some are tempted in ways I cannot imagine...due to genetics? The family you were born into? The culture and country? All these things make everyone different.
But to say that to be unprejudiced means winking at particular sexual perversions...so as not to offend or chase away those who have such inclinations (be it inherited or not....) is ridiculous.
As Dr. Gagnon says above, the Christian life from beginning to end is about dying to self, or as Martin Luther put it,
"When our Lord and Savior Jesus Christ said to "Repent" He meant that the entire life of the believer is to be one of repentence." (First of the 95 Theses.)