As usual, spoiler alert. So read this at your own risk.
Star Wars: The Last Jedi is not about how Snoke got his ass kicked, or how a student re-unite with his teacher. No.
It reveals us a bigger universe, much bigger then the good old “Jedi vs Sith” thing. As Luke pointed to Rey that “the force is around us”, that means they are another force light and dark force users, beside the Jedi and the Sith. Just as Rey is not a descendant of a Jedi, or Snoke is not a Sith.
So, the end of the Jedi order is not the end of all end. Light and dark will always co-exist to achieve balance.
OK then, I shall wait for Star Wars 9