I believe your argument is based solely on a personal prejudice against homosexuals.
Our sexuality is at the core of who we are, how we perceive and relate to others. I am a wife, mother, grandmother and great grandmother. Yet I do not hold such silly and destructive notions that a homosexual can be 'fixed'! I am a Catholic and look for guidance in such matters to the Church first, which understands homosexuality not as a choice but a given. All in all, it is essential to recall one basic truth. God loves every person as a unique individual. Sexual identity helps to define the unique persons we are, and one component of our sexual identity is sexual orientation. Thus, our total personhood is more encompassing than sexual orientation. Human beings see the appearance, but the Lord looks into the heart.
All homosexual persons have a right to be welcomed into the community, to hear the word of God, and to receive pastoral care.
There is no arguing that when one faces for the first time a homosexual tendency it is not without fear and struggle with ones own self. Once that is accepted and overcome at the very least they ought to be supported. While prior abuse may influence attitudes and behaviors I don't believe it altars ones true sexuality.
Some people simply refuse to acknowledge the genuine love shared between homosexual couples. The Church recognizes this but the stumbling block for a Catholic homosexual in a relationship is that they are to live without sex. The following is the story of one such couple.
"I came to chastity because I loved my partner so much. I’m a veteran of a 17-year-long committed relationship with another man. It’s a deep friendship, and it has been since almost the moment we met. It was sexually active for the first seven years, and then—after I became a Christian, after I began reflecting on what Scripture and tradition had taught for 2,000 years—I went to my partner and said, "I love you. Can we please stop having sex?"
http://bcm.bc.edu/issues/summer_2003/ft_catholic.html