Christianity was never intended to be made up of mindless and robotic men and women. People can come to different conclusions without being sinful in doing so.
Strength is not tested or demonstrated during times of ease. Rather, it is during times of adversity that one finds out just how strong he is.
Sin and those who participate therein anger Lord. In the days of Noah, sin grieved the Lord so badly that it repented God that he had made man on the earth.
Why would the Lord invite those weary from labour to wear a yoke? And then, why would the Lord promise rest by inviting people to labour?
