I personally quite like the Voyager series, I just find the Star Trek: Next Generation series irritating.
There is a good message to all the Star Trek series, and that's that violence is often NOT the best way, a lesson I think this forum would find useful.
The main problem with the Star Trek series is that the only ship that looks good is the Romulan Warbird, the rest all merit nothing more than a fancy trashcan lid.
It's one of those things you need to be introduced to rather than discover yourself, that's why conventions tend to be so popular - not that I have ever been to a Star Trek convention of course.