My motivation? Well, I know there's usually a gap in the level of maturity between people in their early teens, and people in their late teens or past their teen years. There's also usually a gap in power. Like a successful nineteen year old will have a job, income, a car, and maybe his own place. While the fourteen year old has at most a summer job, and has all the changes of puberty to handle as well as the rest of life's troubles. It leaves a lot of room for the older guy to control the younger girl. I would say the same thing if the girl was older than the boy as well.

As for the marrying young, if people want their kids to wait until marriage to have sex and all so bad, why did they up the marrying age so far past where puberty usually starts? Back then girls thirteen years old were groomed for marrying, and boys became men at sixteen. I don't know why all that stopped, but then I haven't done much research into it either.

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