I never really connected with this episode. I remember watching it, but it didn't have much of an effect on me, and I rarely, if ever, rewatch it.
A lot of people love it, so I think it's a case where I just missed something, or wasn't in the mood, or whatever.
I'm kinda in the same boat. I think it has something to do with the fact that the episode hinges on the father-son relationship, something that I haven't had in my life, so I don't relate. That said, I don't think of it as a bad episode. It's well written, I love the alternate history stuff, I really enjoy the old Jake scenes...
Actually, speaking of the alternate history segments, there's something that gets touched on here that I wish more had been done with - Jadzia stepping in to watch Jake. Given her connection to the family, I wish that they'd utilized her as something of a older sister/mother figure for him more often, something that connected her to the younger Sisko in the same way that they did Captain Sisko.