I would take it a step further, procreation has never ever been mandatory or even implied as a reason for marriage, there are millions upon millions of marriages that cannot or choose not to have children.<quoted text>
I clearly stated that procreation is ONE of the reasons that people get married. It, however, IS NOT the only reason that people marry.
If the only reason for marriage is procreation, then the government should ONLY be handing out licenses to fertile couples who clearly want to have children.
Using your stupid perspective, those who are infertile due to medical problems or age and those who are simply uninterested in having children SHOULD NOT be issued a license to marry.
These people, as you point out, are only arbitrary friends.
If you're going to refuse same-gender couples the right to marry due to their inability to "naturally" create life, then you're going to have to refuse marriage to those heterosexual couples who cannot have or do not want to have children as well.
Is that a step you're willing to take?
That is a choice, not any kind qualification for marriage.