Afaik it makes perfect sense in a third-world country: There is no social security net so your only security is your children taking care of you when you get ol

Afaik it makes perfect sense in a third-world country: There is no social security net so your only security is your children taking care of you when you get old / become unable to work. Probably there is a high chance some of these children will either not grow up to take care of them, or not grow up at all. Solution: hedge your bet by having as many children as possible.