Kylo Ren is Ben Solo, the son of General Leia Organa and the smuggler, Han Solo. If you didn't know that by now...
Alright, now that Star Wars 7: The Force Awakens has been in theaters for over a month, we, the fans, have been give plenty of time to try and concoct our theories about the newly invigorated franchise.
Is Jar Jar Binks a powerful Sith lord? Is Supreme Leader Snoke really Darth Plagueis? Did Sean Bean die in a cameo role on Hosnian Prime?
Ok, the last one was a joke but we have seen thousands and thousands of wild speculation since the the first showing of the movie. But what if we don't necessarily need to speculate about everything? What if the movie already subtly showed us exactly why Kylo Ren fell to the dark side? I think it did.
Why you ask? Let me explain.
Luke Skywalker would not trust Kylo Ren with a lightsaber.
I believe that after the Battle of Endor, a shaken and traumatized Luke Skywalker did decide to try and rebuild the Jedi Order, but could not fully trust his padawan(s) with the most dangerous and elegant of weapons—the lightsaber.
Obviously Kylo Ren has had training in the Force but I, along with most fans, think he seemed very inexperienced with his blade in comparison to the Force-wielders we've grown accustomed to seeing in the Star Wars films. Now, don't even get me started on why the final duel in the movie was obviously (and rightfully) stacked in Rey's favor, but pushing that aside, Kylo Ren is definitely a novice dueler.
I believe this is a direct result of a lack in combat training and not a weakness or sign of inaptitude.
If we assume that Luke Skywalker would indeed not trust Kylo with a lightsaber during his time in training underneath him, it isn't that crazy to suggest that Ren would become frustrated. He is powerful. He is extremely Force-sensitive. His grandfather was Darth Vader and his uncle is Luke Skywalker, arguably two of the strongest Force sensitives in the galaxy. Why wouldn't he feel entitled to a weapon that would signify his strength and ability? I certainly would. If Luke did withhold Kylo Ren's lightsaber, the young padawan would surely take this as a sign of mistrust or an outright insult.
I believe that Luke saw an lack of patience inside Kylo Ren and refused to train him with a lightsaber, preferring to focus on his studies in the Force. Out of resentment and a sense of pride, and perhaps with a little bit of help from a certain Supreme Leader Snoke, Kylo Ren went behind his Jedi master's back and constructed a very primitive lightsaber which he would later use to kill the rest of his uncle's students.
This would explain Kylo Ren's relatively poor skills with his weapon, his reliance on Force powers, his negative feelings towards Luke, and his horror when he realizes that Anakin's lightsaber came to Rey when she called for it and not him. He feels he is owed a more elegant weapon but he doesn't have the knowledge to make the lightsaber of his dreams on his own.