I hear you, but what do most denominations of Christianity teach?
It seems that many leave Christianity for much the same reasons you state.
You are right wil, and that's how I justified the teachings of the Baha'i Faith in my mind for quite a long time. It's no worse than Christianity I said to myself.
Christianity is not a denomination. Those who leave because of this issue, because they are marginalized, persecuted, and oppressed, are right to do so. Those who leave a denomination because they disagree with this doctrine are right to do so. You know my own denomination is torn over this issue, but unlike in the Baha'i Faith I will not be 'disenrolled' for saying publically that I think homosexuals can be Bishops.
Humans have always drawn lines around acceptible and unacceptible social behaviors, and we've always argued about where those lines are drawn. That's not going to stop...we need to keep talking about this with compassion and with guidance from the Holy Spirit. We are not all going to agree, ever, but we need to keep talking. From science we gain new understandings about the nature of homosexuality. From growing openness of homosexual relationships we learn more about how such arrangements affect the health of people, children, families. We get new info all the time.
In the Baha'i Faith it is not on the table for consultation, and will not be for another 850 years.