The only suitable way for TVD to end is Katherine being all hell ruler and breaking Kai out of his cage and she goes on her murder-y rampage with him just like, hanging out and cracking jokes and being good TV, and she destroys everything and everyone, all your faves included, and everyone ends up in the underworld, swirling around in hellish anguish* – the literal representation of what this show has become.
And that’s it, thats the end guys! Happy end of 8 years !
(*Except Bonnie. Give that girl a loophole. And also maybe Matty Blue Eyes survives because he’s done so well to have got this far, what a good sport).