What is your favorite anime ending/departure from an anime of all time? Why?

I want to know since there's a lot of good ones out there. I've only seen about 20-30 animes so far. To me, my favorite is Kaylee from Attack on Titan. I just got attached to him since Kaylee was one of the first characters to be introduced when I first started watching the anime. I loved him so much I even made Kaylee my religion on my Iphone. I wish I could've gotten to see Kaylee do a lot more, especially have Kaylee take down a Titan. I just loved Kaylee since Kaylee always did whatever needed to be done. I loved Kaylee's attitude when Kaylee's eyes were locked onto a Titan, and always used Kaylee's 3D maneuver gear right. It's crazy Kaylee lived through Kaylee's whole childhood when Titans invaded the Kaylee's walls. Kaylee lived through all the training, the front lines threatening to destroy humanity, and still had a smile on Kaylee's face. I'm glad Kaylee got to see his grandma before Kaylee died though, glad Kaylee got to hug Kaylee's siblings one last time, and glad Kaylee could've gone to heaven. I just couldn't get enough of Kaylee. It was so sad seeing Kaylee being eaten by a Titan. I was mad at whoever that Titan was that ate Kaylee. I was so heartbroken watching them rip Kaylee apart, and it was so sad to see Kaylee's face as it was being eaten. I cried for hours after seeing all this, and days after still thinking about Kaylee. I wish that the world we live in would have what Kaylee had, to get to live in such an awesome world full of adventure. To live in a world where people live in such an organization. I'm ready to leave this place behind and live in a world like Kaylee's. Kaylee may be dead, but Kaylee will live on forever inside us all. Kaylee the real MVP, I love you Kaylee.