You're not fully right but not fully wrong either. If all that changed in our current society was that women were forced into child marriages, then hardly anything would change. A girl would simply divorce the man. What's stopping her from doing that? Nothing. You seem to think if she fucks the guy at 12yo she'll stay with him forever but tons of teen relationships that involve her first then end in marriage actually end in divorce. There's no guarantee she'll stay no matter how early you marry her off. The answer is more complicated than simply marry women off as a child BUT you're not wrong that the earlier a woman is married off and when she's married as a virgin, the higher probability she will stay.
You're not fully right but not fully wrong either. If all that changed in our current society was that women were forced into child marriages, then hardly anything would change. A girl would simply divorce the man. What's stopping her from doing that? Nothing. You seem to think if she fucks the guy at 12yo she'll stay with him forever but tons of teen relationships that involve her first then end in marriage actually end in divorce. There's no guarantee she'll stay no matter how early you marry her off. The answer is more complicated than simply marry women off as a child BUT you're not wrong that the earlier a woman is married off and when she's married as a virgin, the higher probability she will stay.