brash_stryker said:
Think about the OT. It was established early in ANH that Vader could choke people to death. And yet Vader never ONCE tried it against Luke. Would have ended the right pretty quick wouldn’t it, if Vader had just choked him to the point of unconsciousness? Well it’s pretty obvious to me that Vader couldn’t because of how strong Luke was in the force. That’s what sets the Jedi apart from the normal people in this universe, otherwise the logic of it would all fall apart.

Someone else brought this up and it’s a great point. Also Vader could have simply picked Luke up with the force, placed him in the Carbonite chamber, held him down with the force and hit the switch but just like Ren he “forgot” he could do that. And Vader is a MASTER of the Dark Side; Kylo Ren even being a Dark Side Adept is up for serious debate.