We'll have to agree to disagree on that one!
Well I'm mainly aiming at young people with no intention on being a couple/family kind of sex. Which make up the absolute majority of people when dealing with this type of issue. Young folks having sex, then crying foul when they produce. This is who I'm referencing when I say sex is not a necessity in young adults life.
For Married/Joined folks sex is indeed of upmost importance in that relationship. Then again married folks is rarely who were talking about when it comes to 'Oops you're pregnant', lets abort, no I want the kid, no I don't yata yata.