It seems like the homophobes are, more than anything else, most opposed to (afraid of?) the idea of homosexual sex, specifically male/male sex. The very term sexual orientation reinforces an idea that homosexuality and bisexuality are solely based around copulation.
But what if we changed the language? What if instead of concentrating on the physical (and scientific) components, we instead focus on the emotional and romantic aspects of same-gender relationships?
What if we replaced the term sexual orientation with affectional orientation? What if we used words like homo-affectionality or just affectionality? What if when we removed all references to sex and instead fought for same-gender marriages?
Does the change of terminology alter the images in your mind?