John Winchester, is pretty much like Dumbledore in this fandom. His curse was that he understood too much. he was too wise, too broken and too strong.
Everyone keep saying that John was a bad father because he introduced his sons into this life. but guess what?! he didn't! he didn't introduced them to this life, they were already a part of this life. They were meant to be.
As that Cupid said, It was a big deal getting Mary and John to fall in love so that Sam and Dean are born to be Lucifer and Micheal's vessels to fulfill destiny of this world, the apocalypse, God's plan.
1. Kripke’s original concept was a series which centered around a pair of reporters who travel across the country investigating urban legends for a newspaper column. In fact, the series wouldn’t have even been named Supernatural – early drafts were written under the عنوان Unnatural.
2. In the original draft of the Supernatural pilot, Kripke’s plan was for the brothers to find their dad dead on the ceiling – not their mom!
3. The truth is that Ackles initially auditioned for the role of Sam Winchester, not Dean! As it turns out, it wasn’t until Padalecki auditioned for the role of...