Should teens have sex at home?

Stephen Kruiser at PJ Lifestyle linked to an article over at the NY Times entitled "The Sleepover Question." The article was written by Amy Schalet who is a professor and author of a forthcoming book Not Under My Roof: Parents, Teens, and the Culture of Sex. Schalet seems to think that Americans could improve their family life if they let kids have sex at their home:
Would Americans increase peace in family life and strengthen family bonds if they adopted more accepting attitudes about sex and what’s allowable under the family roof? I’ve interviewed 130 people, all white, middle class and not particularly religious, as part of a study of teenage sex and family life here and in the Netherlands. My look into cultural differences suggests family life might be much improved, for all, if Americans had more open ideas about teenage sex. The question of who sleeps where when a teenager brings a boyfriend or girlfriend home for the night fits within the larger world of culturally divergent ideas about teenage sex, lust and capacity for love.

What's your take?