If there is any one single thing that keeps people, this author included, from getting into Star Trek, it's that no one can decide on where to start. The fandom is its own worst enemy.

Even when you single out one show from the bunch, it's always the same stream of what episodes/seasons to avoid, what characters will annoy you, what storylines make no sense. If the first entire two seasons of Star Trek TNG are bad, then why should one even bother with it in the first place?

Which brings me to DS9. While the first season or two may have its misses, everyone seems to agree that it's still a rock solid start, which only gets better from there. There's none of the constant squabbling over which episodes are good or bad from what I've seen, which at least made this author more willing to watch it.

While there is a minor debate here and there about precisely when the show goes from good to great, it's generally agreed to be somewhere in season 4. Which is a lot more concrete an answer than when you ask the same question about the original series, TNG, or Voyager.