Okay so I still not over supernatural ending and I think is because I'm still angry with certain facts and I don't really have anyone that watched the last episode to talk to, so I'm gonna talk to you guys!
I think what made me the most angry is the fact that sam got a life and Dean didn't, why is that ? well here we go!
During the 15 seasons we got to see how good the brothers were together and we also saw their relationship being the reason they couldn't have a "apple pie life" , like when Sam was with Jess and going to college and Dean show up and brought Sam back to the life as a hunter, and when Dean was with Lisa and Sam came back or when Dean went to purgatory and Sam had Amelia. There relationship always brought them back to hunting and one of them always lost something (someone) they care about in the process, which many bad guys new and sometimes use in there favor.
During the show we also saw other hunters that were able to combine the two lives and we saw how the boys were learning how to do just that! So when we got Sam and Eileen dating I really thought that both boys would get the life they deserved and still continue to hunt, I thought the show would have this really cool turnaround were all those bad guys and other characters that said that Sam and Dean were " poison" to one another would be wrong, instead Dean had to die so Sam could have a life, and Sam (as what it looks like) also quit hunting, proving all of the bad guys right.
All of that just makes me super angry because it agrees with the fact that they weren't good for one another!
I don't know if any of that actually makes sense for you guys, but I really needed to put it out there, also I'm sorry for any possible mistakes english isn't my first language!