People who grow up being told that sex is only to happen between a man and a woman will quite naturally have discomfort about versions of sex that look different. But their discomfort does not mean that only hetero-sex is okay.
Sex, religion and politics are eternally entwined bed fellows. No matter how you might want to clothe it, your sexual beliefs and lifestyle are sourced from and impacted by the long traditions and policies within this indivisible trinity.
How has Christianity come to be understood as the harbinger of traditional family values? Why do political parties still invoke Jesus as leader of these traditional ideas, when He, Paul and the other apostles never embraced them?