There's not really many - if any (I can't think of any off hand) - shows like it. It's got a bit of adventure and/or intrigue, but also drama, decent acting (most of the time), and most importantly a hopeful, non-violent message. Not even the newer ST shows (or the horrible JJ Abrams movies) can make that final boast. It's definitely in my top three go-to shows.
For a generation that has nothing but existential threats and anxiety, TNG is a great show to watch. It's nice seeing something on TV that's actually hopeful for humanity.