>In this day and age I can't think of any more reckless advice
>than to tell someone to wait until they have bound themselves
>to life with someone before engaging in the most intimate act
>two people can partake and GAMBLE that you are compatible in
>such a huge aspect of your married life.

What makes it reckless is that it leads to people doing weird shit to get around a loop hole instead of just having regular protected sex. Because they're not "supposed" to be having sex they're sneaking around and doing it without getting birth control, condoms and generally being safe. That's the real problem.