If I may, and I will be careful in my response so as to be devoid of any bigotry, free of blame. If there is anything wrong in the redaction of my post, be it impoliteness, rudeness, disrespect or intolerance towards other views, I will leave it up to you to demonstrate.

To explain.

Everyone is born a certain way different than another. We know from the development of an infant in the womb, that hormonal development can cause higher or lower levels of sexual hormones in the infant's development. These levels later dictate sexual orientation in the person. This is a given.

For regular cases, please allow me to exclude for the time being hermaphrodites, I'll assume the individual to be either male or female, with the reproductive system respective to their sex.

Given a male that developed with a lower level of testosterone, said male could have a sexual desire towards the same sex, biologically speaking. That desire would be within his body.

If a person born with that feature would want to honor God, and what is written in the bible, (http://en.wikipedia.org/wiki/The_Bible_and_homosexuality#Passages_from_the_New_Testament), he would look to abstain from said desire. Assuming for a moment that this individual also has desire for the opposite sex, but to a lesser degree, this person's battle to honor God would be to find biological ways to increase their level of desire for the opposite sex, by ways of personal development, diet, sport, and other external factors.

For the following segment of my explanation, I ask that you be open, rather very open, it will be a difficult challenge (kindly understand what I mean). I will ask you to swith viewpoints for a brief moment.

Assuming this for a brief moment, assume that homosexuality is a sin, something that displeases God. Let me walk you through this briefly as a mental exercise. If homosexuality is a sin, then it can be likened to, for a simple example, for all things other than self-harm: substance abuse. I want to liken it to this because it is something that both you and I, no matter our position, strongly disagree with. A specific example being alcoholism.

Science has shown that alcoholism is something that can be passed down genetically. For the person suffering from this condition, yet desires to please God, it will be their battle to work against their biological pre-disposition, by the power of will, but especially the power of prayer.

You can reset your position now, thanks for walking with me through it I know it is hard for you, as you mentioned earlier. The reason I wanted to walk you through it is to demonstrate that, though God creates all of us different, with different tendencies to different things, good or bad, it is also possible by the power of will and prayer to go against tendencies that would be considered a sin in the eyes of God.

Sincerely, I just want to help and be constructive. If I'm not, I fail for myself. Please let me know where I do.

So... in other words it's wrong to be themselves? And how are homosexuals harming themsleves? On the contrary, they harm themselves by denying and repressing their homosexuality. Hence why classifying homosexuality as a sin is psychological abuse.

 Engaging in homosexual acts or desires is considered sinful, and if you want to truly be one with the lord, you have to deny these cravings and seek a heterosexual relationship (made easier if the person in question is Bi instead of gay.)  

Regarding italics, I appreciate you acknowledging my effort. I trust you understand this has been a painful process for me.
Regarding bold italics, I truly appreciate your clarity on the matter. That though you disagree, you see that at the very least the position is logically robust. You have no idea what this means to me.

With this said, in light of regarding underlined italics, I kindly urge you revise my example of substance abuse. Having used said example as a bridge between both our points of view, I hoped to find an area that you considered harmful due to science, but which I considered harmful both due to science, and due to the biblical moral standard, as stated in Ephesians 5:18:  Do not get drunk on wine, which leads to debauchery. Instead, be filled with the Spirit.

Your participation in this effort of respect is a huge light to me. You have my gratefulness.

You are absolutely correct on this. Scientifically speaking, homosexuality and alcoholism have nothing in common. The mental exercise I had you do was assuming an imaginary condition, that homosexuality was a sin. Think of it like working with imaginary numbers in mathematics. I know it's painful for you to see homosexuality as a sin, but for the purpose of my demonstration, it was the assumption I needed temporarily.

To describe homosexuality as sin (consider it an imaginary logical clause), I was able to liken it to alcoholism in sin only. Remember I bold italicised the sentence "for all reasons other than self-harm", within the assumption position of  homosexuality as sin.

I did that because alcoholism is something we both agree is wrong for scientific reasons, I also disagree for scientific reasons, but also for religious moral reasons. In a case where alcoholism, as a sin, can likewise be controlled, it is understandable that homosexuality, as a sin, can be controlled. 

To clarify, I am making the assumption that homosexuality is harmful to your spirit as alcoholism is harmful to your spirit. From there, since alcoholism is also harmful to your body, and it can be controlled, the logic can be unwound back to homosexuality. Granted, I don't want you to hold on to the assumption too long as it is very contrary to your framework, and I hold utmost respect to human freedom of thought.

You got the satanic book if you want something thats the opposite of the Bible.

Anyways if heterosexuality was a sin, world population wouldnt be where it is now in the billions.

But jokes aside, the bible puts homosexuality as a sin as it is seen as something that isnt natural. Heterosexuality is natural, life is made through contact between two different genders (which is considered to be the norm since pretty much when the world and all its creatures came into existence.).