We do not accept answers simply because they make for easy explanations. It is true that explanatory power gives weight to a theory, but it must be accompanied by predictive power as well, not to mention replication, or else it does not even qualify as more than a hypothesis.
When we start to explore the idea that homosexuality is a disorder, we can not make predictions that come true. IOW, we need to be able to say something like "if homosexuality is a disorder, then we should expect to see X". When we go looking for X, we do not find it. 'X' can and has been many things, and yet no one can clearly list an 'X' today, because when we add controls and make predictions, X disappears. There is no disorder ever listed that manifests itself in one single narrow aspect of the mind. We have no way in the lab, and no examples in nature, of reproducing homosexuals. No one on earth is able to make themselves homosexual through sheer willpower, and of course I am not simply talking about sexual behaviors or actions, I am talking about preference. If someone finds the idea of holdings hands with a man repulsive, how are they going to make themselves crave it, look forward to it, and feel empty without it? Anyone who says this is possible is not being genuine, or does not know the depths of true love.
The truth is when we do go looking, we can see nothing, other than the obvious preference, which sets homosexual development apart from any other type of sexual development. If we can't even point to an area and say the disorder lies here, or this is the criteria that constitutes a disorder, then how can you say it is one?
It would be easy and make a lot of sense to conclude that homosexuality is a disorder, but we just don't see support for the idea in the real world. You can blame this on politics, bias, arrogance and bigotry all you want, but that does nothing to help you understand your opinion. It does nothing to bring you in tune with your environment. At the end of the day you are unable to demonstrate why homosexuality is a disorder, and reveal with your posts that you are not considering all the information. That may be good enough for your mind, it is not good enough for ours.