so they had no other source of income,to let single men be a breadwinner,practice being the provider for a family,to prepare them for when they are,they needed to make an income,to keep young adults busy,they needed a job to make money,to easily go to where the work was at.,to be trained to become a breadwinner,they could be money makers when married,not wealthy,in order to learn to support others,training to become the providers,income wouldn't go somewhere else,to push the norms of having breadwinners,training to earn money before marriage,they didn't have enough income,they can learn to make their own income,breadwinners,