Reasoning showing homosexuality is evil.

[AFTT47]

First I argue, if free-will is a factor, we all know it would be wrong to give in and change our nature we are originated upon.

I disagree with this entirely. There are many things in our nature that are undesirable. An obvious one is our natural tendency toward tribalism. There is an instinct to stay with your group and be wary of outsiders. That is a genetic trait which served us well when we were primitive. Fear of outsiders would keep you alive. But it is counterproductive in modern society. It leads to racism among other things. It is desirable to use intellect to override that nature. There are many more examples.

In the case of sexual preference, we have very little to no ability to override that but if we did, it would irrelevant to society because homosexuality causes no harm. The fear that a large percentage of the population would become homosexual even if they could is ridiculous!