Are you saying that left is synonymous with dying? Who specifically left Dean throughout the series run? Mary died when he was 4. Dean chose to leave Sunny's because despite how rough his situation was, he had something that made it worth it, a brother who he cherished+ https://twitter.com/gaycasrights/status/1349787828994109441
Cassie and Dean were not going to last because he wouldn't have been able to leave the life for her. he saw her leaving him as a mercy to herself so that she wouldn't end up endangering herself by association. he recognised that there would be a target on her back if they+
took anything further. John didn't leave Dean. he went rogue on a hunting trip that sent them on a wild goose chase, which prompted Dean to seek out and repair a relationship he'd lost, the one with his brother. we found out from Jared that Dean coming to collect him+
at Stanford was the happiest he had ever been. we don't know if he would have returned to school had Dean asked him to stay. and since Dean already lowered his guard enough to say "I can't do this alone", he wasn't about to then bare his soul further. John, again+
did not leave Dean. he sold his soul for him. does it excuse the crappy things that he did? no. but it was something. Sam sacrificed himself for the greater good, throwing himself in the pit, but he was only able to overpower Lucifer because his will to stop hurting+
Dean was stronger than Lucifer's will to keep wailing on him. Lisa and Ben didn't leave Dean. Dean had Castiel erase their memories to spare them the trauma of being kidnapped, tortured and knowing what goes bump in the night. it was also because he knew she and Ben loved him+
and the idea of knowing that they're out there, miserable and suffering because of him made him feel terrible. he chose to keep the memory of them to remind himself not to make the same "mistake" again. Bobby didn't leave Dean. he was killed by a Leviathan, and when+
Bobby is in that space where he and Dean meet between dimensions, Bobby saw Sam and Dean because they were the most important people in his life. he's also the soul to greet Dean in heaven when he turns up. Charlie wasn't that established in their lives in season 7, so it wasn't+
abandonment when she went off to do her own thing. Benny didn't leave Dean. he agreed to die and go back to purgatory so that he could keep Sam safe and lead him to the exit. you don't do that unless someone has had an impact on you. Dean changes people, monsters. he makes+
them more human just by being around them. it's his compassion and drive and empathy that moves people to want to be better. it's not for everyone. sometimes Dean's not in a state that he can project onto others and peel back the layers. Kevin didn't leave Dean. he was+
killed by Gadreel. probably to the day he died, Dean held onto the guilt of that, since he convinced Gadreel to let him in and took down the warding so that he would have acces to the bunker, and by extension, Kevin. Dean is a man that walks around with all of his regrets+
visible in his eyes, hidden behind a cocksure grin that hardly ever meets his eyes. I can't remember if there are any key characters beyond s9. but what I will say is Mary died, didn't leave him. Ketch, just by hanging around him, became less of a heartless killer and started+
to actually care. Rowena, with the help of Sam became one of their best allies. Crowley at one point, was his best friend and then sacrificed himself for their cause, even if it was stupid and amounted to nothing. Castiel went from a robot to something a hell of a more+
digestible. practically everyone Dean meets that spends enough time with him, he impacts positively. so, no. I don't know what you're talking about. just because he does something you don't like to YOUR favourite, doesn't make him public enemy number one.