Quentin L. Cook:
"When it comes to morality, some adults believe that adherence to a single, overriding humanitarian project or principle nullifies the need to comply with the Savior’s teachings. They say to themselves that sexual misconduct is 'a small thing … [if I am] a kind and charitable person.' Such thinking is a gross self-deception."
Who cares if you're kind! You cares if you have charity! The Book of Mormon says, "[I]f ye have not charity, ye are nothing, for charity never faileth." Apparently, that really doesn't matter if you're having extra-marital sex. It's fine if you're a nasty, misanthropic jerk as long as you're celibate.
I have hated hearing people categorize the "sexually immoral" only by their sexual conduct--as if that's all that matters about them. Often it seems people lump all "sinners" together—people having sex in a loving, committed relationship that isn't a marriage are in the same category as pedophiles and murderers. I have spoken up to say that someone could be having sex outside of marriage, but think about how they could also be a really kind, honest person with a love of others. That must count for something.
I'm sure Elder Cook would argue that it does count for something, but not as much as I think it does. I hate that this statement makes it seem like any positive qualities a person may have are overshadowed by the fact that s/he is having sex with someone Elder Cook thinks s/he shouldn't be having it with.