It does beg the question: what’s up with Mexicans having so many kids?
This query does not have one simple answer but I have my theories. First, there’s the reason that all agriculture based economies had so many kids. Just like America prior to WW2, families on the farm needed the farm hands. Same goes for Mexican farms. But that isn’t the only answer.
The second reason off the top of my head is Catholicism. There are some strict interpretations of the Bible that some argue prohibit any and all forms of birth control. The old catholic guilt will tell you that the only purpose for sex is to procreate. In fact the only reason a man’s seed should ever leave his body is for this reason otherwise he is guilty of onanism (which is just a fancy dirty word named after Onan, a guy from the Bible).
Third, it’s just one of the dominant cultural values. Mexican families place great value on the family and on taking care of one another in a way that is very different from American values. It isn’t as common or acceptable for a child to go away to college far away and never return. Nor is it considered acceptable to place the old and infirmed in an old-folks home. The elders are to stay with the family and that’s that. This sense of family togetherness is related to the desire to have a large family.
I don’t really think there is much else to it than that: the farm, the no-birth-control-of-any-kind, and the family togetherness. To those of you who are waiting to start a family I would suggest this: don’t even look at a Mexican woman the wrong way, especially if she still has her catholic school uniform, because you could end up a daddy before you know it.