Yeah, I mean endings are hard, that is known across all levels of media. Some I’ve enjoyed (Friends, Dawson’s Creek, Schitt’s Creek) and others I’ve had serious issues with (HIMYM, GoT). But SPN hits incredibly different because its so obvious that this ending was not the one originally intended and that the writers hated writing it. Like, with HIMYM, the original showrunners came in and forced their pre-planned ending on the current group of writers, it sucked but it was hardly network interference, more along the lines of “oops, sorry we didn’t tell you where you needed to be guiding this show for the last several years, maybe that would have helped the narrative make any kind of sense.” GoT we all know how D&D just got sick of the show and wanted it over, you could tell the whole thing was going south for about two seasons. 

Yet SPN is a show that continued to exist for 15 years BECAUSE of the amount of love its cast, crew, and fans have for it. Yet rather than celebrate that legacy, the network stepped in and summarily ruined storylines and character arcs because they thought it’d make them more money. 15 years of found family were erased by an uncaring network. 4 years of Dabb’s carefully plotted work as showrunner was erased by an uncaring network. An actor who has been around for 12 years was removed from the final episodes by an uncaring network. A deaf character was erased by an uncaring network. Both main character’s storylines were absolutely ruined by an uncaring network who gutted whatever that final script was into an inch of its life until none of the series’ trademark heart remained. You’re right, SPN’s finale was just bad and it leaves you with a bad taste in your mouth and none of us have been able to move past it because its so adverse to everything s15 promised up until those final two episodes.