Jonathan, no one needs to validate their sexuality or their worth through attempting to convert people to the idea that the Bible itself condones homosexuality.
God condones human beings as precious to Him. Acts and decisions we make as humans with minds of our own to accept his clear ordinances or not are between that man or woman and God. Our value does not lie in our acceptance by any culture, but rather in the fact that God loves each of us and wants us to accept Christ as we are. The relationship developed after that moment is how he brings truth to us in all things. We just have to be able to believe God has the final say on everything. Our opinion does not change his order and authority.