When you're happy with your device but the manufacturers support has stopped, you are either stuck with the last Android version update or you go to the dark side.
I plan on sticking with my current phone as long as Developers still think it's worthy of support, hopefully, Android O and beyond.
Clean flashed new update this morning and took less than a hour to be back up and running
I Think i l stick with lolipop when i update at 3am because it is good for me