At the least, the common objections to our path seem flawed. Strictures of the Old Testament, on clothing and hair, are old covenant, and may be considered guidelines at best in light of the New. Furthermore, if this is wrong, so many fashions are equally so.
Likewise, one must ask, if there are sins of the heart in this - pride, jealousy, selfishness - how are they more potent than those same sins in daily life? Or more wrong?
If the objection that God made us male and female is brought up, at the very least intersex people are an exception. And as God makes no mistakes, this signifies that our feelings and natures are likewise not in error. Furthermore, even if God makes no mistakes, we would not take that to mean that a person with a debilitating genetic condition should live as such forever.
Can we not be considered like unto eunuchs, in a way? And as worthy of God's teachings and mercy as the Ethiopian mentioned specifically?
Finally, we come to sexuality. To which I ask, what is the sin? Two like-gened people in a relationship? In which case if I marry a woman I am not a sinner. Or is it dependent on internal gender? In which case, why should I, considering myself a woman, not seek out a man? If both, am I in sin if I remain celibate?
In the end, if you believe, the only person you must be right with is God. And if you believe, you know you can tell if you are without need of human intervention.