The problem steems from the Roman and Greek culture which was more flexible in sexuality. The early Christians, in order to set themselves apart as a distinctive group, used the older scriptures and the letters of Peter and Paul to fuel their bigotry and what they saw as unnatural. Of course they did not have the knowledge we have today.
Today we know that one his born with the predeposition of homosexuality due to a hormone imbalanced and brain development, while there are also environmental factors that faciliate or inhibit such behavior, such as cultural norms and the moral values one is instilled through childhood development.
Those who use thousand of years old scripture to practice hate are lame brainwashed individuals who need to get with the times. We don't live in the middle ages any more so blind faith and zealot bigotry is no longer needed and, for most people, wanted