While it might seem true, arranged marriages seem to me kind of like adopting children.
There's a million variables to consider when having your own children, when you're adopting children you're adding many more. Sure, it could all work out wonderfully, but you're just increasing the random factor. See the recent movie "Lion" for examples of randomness, both good and bad.
What's wrong with having the same culture you mention, except for the fact that people can marry freely? You'd have the same benefits but hopefully with lower risk. If you want to work in the same cultural limits, just ask for advice (from your family, friends, etc.) before marrying and try to follow that advice.
A lot of more traditional places work that way, e.g. Southern and Eastern Europe.
Of course, the general problem is that you're asking 20s-something people in the throes of hot, passionate romantic love and attraction (in cultures which also celebrate romantic love!) to voluntarily submit to a plethora of mood-killing "cultural limits". Boo!
But it's probably still better than the American approach of, "look ma, no hands!" :-)
There's a million variables to consider when having your own children, when you're adopting children you're adding many more. Sure, it could all work out wonderfully, but you're just increasing the random factor. See the recent movie "Lion" for examples of randomness, both good and bad.
What's wrong with having the same culture you mention, except for the fact that people can marry freely? You'd have the same benefits but hopefully with lower risk. If you want to work in the same cultural limits, just ask for advice (from your family, friends, etc.) before marrying and try to follow that advice.