Actually Jesus told us why they left and that He knew they would and didn't expect them to stay.
John 6:63 But there are some of you that believe not. For Jesus knew from the beginning who they were that believed not, and who should betray him.
He explained it quite well that only those who the Father called would stay.
>>One has to wonder how these authors convinced you guys that Jesus wanted those false disciples to stay...To, not leave...<<
You just make up false statements.
Jesus wants all to gain salvation, but all need to accept God’s love and follow His commandments. We all have the free will to choose God or not. Some make the choice to follow their own opinion like the ones in the Bible.
So why did you leave and not follow Jesus Christ and just make up your own intrepretation of God’s words and teachings?
God rejoices when the Prodigal son returns.