If you discriminate Mormons for holding those views by, for example, speaking unkindly, making prejudiced remarks, not welcoming to a barbecue, or refusing to hire one for a job, then that’s not okay.
This is something that really irritates me. Speaking unkindly about someone’s philosophy is not discriminatory and making remarks about how bad someone’s religious ideology is is not being prejudiced.
First, I am not suggesting that you cannot disagree with a religion over specific beliefs. I am not at all indicating that my faith is immune from your criticism because of the different view on this topic.
But referring to the rest of your post, you are actually very wrong. A great deal of prejudice has been exhibited towards people for the religious beliefs. It has served as the underpinning for the violation of the rights of religious groups throughout history, even going so far as to lead to violence. My own faith has a long history of bigotry towards it. People have been vandalous and violent towards my faith. You can disagree without being discriminatory, but many people use their disagreement to get to the point of bigotry without even acknowledging the inherent evil of their actions.
If the Mormon I’m welcoming to my barbecue doesn’t talk about his faith when no one wants to hear about it, then I’m cool with him or her, but they’re devout in their religion and believe that my lifestyle is abhorrent and a crime against the almighty, then I would probably find it uncomfortable to be welcoming.
You are welcome to feel that way. My point is that you should not withhold your neighborly kindness just because you find something that other individual holds to be contrary to your moral worldview. How would it be if I invited my neighbors to a barbecue, but only those who abstained from sex before marriage? Would that not seem discriminatory?
How about politics? Are you going to justified in excluding people of a different political affiliation from you from jobs, parties, or other events simply because their personal philosophy differs from mine and can be changed? No, it remains bigoted to do so.
Refusing to hire someone for a job is different, but again, if they’re extremely outspoken and don’t keep their religion to their self while on the job, then I wouldn’t want to hire them. No matter how much you try to do this, it not compelling or fair to equate not liking someone’s philosophy with not liking someone’s immutable characteristics.
This is truly where people draw a false line. Yes, homosexuality is more immutable and unchangeable than a religious philosophy, but mankind’s draw to religion is certainly immutable, and the passion and strength that causes a person to cling to such views are not changed as easily as deciding what to have for breakfast. How many people have died for their faith? Why were they so committed? In terms of influence and self-definition, I’m afraid that the characteristics of one’s faith are not as different from sexual preference as you seem to believe.