A random thought occurred to me a few days ago: perhaps one of the reasons as to why muslim women aren't to marry non-muslims has to do with preservation of their Islamic rights and protection? A non muslim man wouldn't necessarily be obligated to abide by Islamic standards of marital conduct, divorce protocols, nafaqah etc., all of which insures the wife. In the case an interfaith marriage goes south, the lines would get blurred. I'm just speculating and throwing this out there. Any thoughts?
That makes sense, and I’m sure it is one aspect of it. Another is the financial issue. A non-Muslim can always get usurious loans to have a house and car ready, while a Muslim man will usually be forced to work much harder for these things, so it will lead to an imbalanced situation where non-Muslim men, in comparison to Muslim men, will find it much easier to build families with Muslim women.