How can we pick and choose which parts of the Bible to follow? One thing is God’s will and another is just cultural differences? What if it’s all cultural? What if homosexuality or saving yourself for marriage is as outdated as women staying silent in church or Leviticus forbidding tattoos?
Jesus was trying to present value of a life of vulnerability in which one would have practical and needed experience of the same. It would be a life without baggage, so one would learn to accept others and their culture instead of always carrying along our own country's assumptions and calling them the Gospel.