Maybe this is because I am 19 and leaving for my mission in less than a month, but I would personally rather not have to deal with sexual feelings in the afterlife. I'm sure that changes when you have a wife and all that jazz, but I really hope there is a much deeper way of loving in a Celestial state. We use only 10% of our brains in our mortal bodies and we can read each other's thoughts in heaven, I don't know about you, but I can picture much grander designs than that of sex on earth.