Well, there's a line in a fifth-season episode, which I think is non-spoilery enough to quote... somebody talking to Sisko says something like:
"Think of it Captain! A few years ago, no one had ever heard of Bajor or Deep Space Nine. And now all our hopes rest here. Where the tides of fortune take us, no man can tell.
Which says a lot about how the show works overall. At the beginning, DS9 is an outpost on the frontier, and by the end it's the epicenter of galactic affairs.
It's a fun ride, so I suggest sticking with it.