Quite right BeR.
I was taught the purpose of sex is to glorify God, bring forth children, express intimacy, provide comfort, and bless the spouse. No one aspect is more important than another.
Obviously we are biologically programmed to procreate - if we can, if the time is right and if we want to - but intimate love is equally important; were that not the case, people who can no longer conceive children or are infertile would not make love. For homo sapiens, sex is far more complex and more pleasurable than just for the purpose of producing children. The desire for intimacy comes first.
The way you describe it, Spud, reduces sex to a mere function. I've no doubt there were, and maybe still are, some who do view it that way but God wants us to be happy and enjoy life.