I agree with all of the points in @awakeQ1's post and all of my fellow anons comments. The reason POTUS doesn't drink or take drugs and never has is because he saw what alcohol did to his beloved older brother Fred. He admired Fred all of his life and looked up to him. He wanted to be like Fred and said Fred was the pinnacle; most handsome,  most intelligent, great businessman, keen wit and very charming  but POTUS saw his life fade away due to alcoholism and it broke his heart.  Also POTUS knows this battle he is fighting for us is to the death. I can only imagine the evil stuff he knows. Probably so much more than we can imagine. We are watching a Maestro conduct the world's most intricate symphony. He is a Master. Look how many times (((they))) have attempted to murder him. God's hand is on him. He must win. We must win. God will win.