Actually, one could make the case for it. 50 years ago, it wasn't needed. Now, many men are reluctant to get married 'cause they're getting the milk for free. As a result, lots of women who want to get married and have kids can't. As a result, this could help reverse the "child deficit" among Caucasians.
One could also argue that we have a form of this right now (called serial monogamy). Except that if you like another partner, you've got to break up your existing family to make it happen.
Of course, even if this were possible, you'd still have to talk your first wife into it. While that could be tough, it might not be if your wife would rather have you bothering someone other than her for sex.
[Actually, one could make the case for it. 50 years ago, it wasn't needed. Now, many men are reluctant to get married 'cause they're getting the milk for free.]
As a single man, I have to admit that I get surprised and learn a lot on FR. For instance, did a lot of older men in American society really marry partly because they would finally be able to get sex? I guess before 1968...that actually was the case. Wow! I think I remember reading about that in a history book somewhere.
[One could also argue that we have a form of this right now (called serial monogamy). Except that if you like another partner, you've got to break up your existing family to make it happen.]
The real other form that exists right now (for some guys) is the girlfriend in San Francisco, the girlfriend in LA and the girlfriend in Reno (not necessarily with any bad premarital sex going on). The breaking up part isn't very fair or nice to someone you may want to be friends with forever.
[Of course, even if this were possible, you'd still have to talk your first wife into it. While that could be tough, it might not be if your wife would rather have you bothering someone other than her for sex.]
And this is where I lose you. If your first wife is someone that you *want* to bother all the time for sex...then you are a lucky man! No need for the second wife.