Because what’s the use? You can see the finality on Quinn’s face— change is worthless. It doesn’t exist. Life is cruel, and unusual, and completely unfair. So why bother? Why bother feeling? Why bother trying— why bother with anything?
And this is what Sliders is really about.
It’s the personification of cynicism.
Of existential horror taken to such a complete extreme as to become completely meaningless.