All that was a means to an end anyway - the ultimate act of love and sacrifice. And it's not like Christ didn't have a legit 'out' so that He wouldn't go through any of that.
Matthew 26:53 Thinkest thou that I cannot now pray to my Father, and he shall presently give me more than twelve legions of angels?
Matthew 26:54 But how then shall the scriptures be fulfilled, that thus it must be?
Jesus bore it all - Judas' betrayal, Peter's three time denial of knowing Jesus, the Disciples running away except for one who did show up that crucifixion, the beatings, the insults and humiliations, the false accusations, the mob's hatred, the nails to the wrists and legs, the crown of thorns jammed into His skull, a long painful death which included the sins of the past, the present of the time, and future being jammed into His broken Body. That one awful moment in which His Father turned His Back on His Only Begotten Son because of all the sin the Son took upon Himself. The Law is the Father will always turn His Back to sin.
Partly to fulfill scriptures and prophecy. Mainly because of He loves people that much so those who do believe will not perish.