I am usually on the other side of this argument, in that my main enjoyment of Star Trek is the exploration of ideas and morality plays that we get from TOS, TNG and the early seasons of Voyager. The utopian setting and unrealistic morality of all the main characters in TNG especially are what makes an episode exploring the nature of individuality or whatever topic work so well.
I enjoy DS9 for what it is, but it also set the stage for modern Trek which is so obsessed with "realism" and galaxy-spanning plotlines in a way that I do not enjoy. If I want to watch just an episode or two, I always reach for TNG or Voyager, but if I want to do a longer re-watch then DS9 is definitely my preferred choice.
Episodic is not always a bad thing, and sometimes it is actually a very important feature! I wish modern TV writers and producers would have the same perspective about serialization, but in reverse.