The Universe as you know it will die.
Everything you have known for your entire existence until now will perish in a mass of bolide impacts, bringing with it a conflagration which will eventually consume the entire planet. Your family was murdered. Your town has been reduced to a fiery inferno. Every tree, every green blade of grass, every insect, every animal; be it a dog, cat, bird, horse... every single living organism as you know it is about to perish, except you. and even then, you cannot guarantee your own survival, let alone that you will ever be the same as a that foolhardy, naive individual that unknowingly chose to resign themselves to such a fate.
Sburb and Sgrub are like a virus; as a superimposed plane of existence, both seemingly destroy the host planet/galaxy/universe in which it is located, before passing onto a new host, with the new session experiencing the same loss and the same tragedy as the one that preceded.
... That's the basic gist. If Sburb is construed as being evil (for whatever reason), how can one 'win' Sburb - if 'winning' leads to the perpetuation of the game under a new banner? If such is the case, how can you 'lose'? Is is possible to end the game?
If anyone wants to explore this concept in more depth, feel free to do so - and apologies in advance if threads on a similar tangent have appeared before. My bad.