Star Trek is about space exploration, not going home. It´s about "Let´s see what´s out there", not "How many light years are we from Earth?"
I don't look at it that way, when somebody mentions Star Trek to me I don't think about a spaceship out exploring, I think of Vulcans, Romulans, Klingons, Borg, Cardassians, Breen, Dominion... Star Trek isn't a concept to me, it is a universe filled with interesting characters and interesting races with iconic spaceships and several different eras. It's like Star Wars in that regard, the Star Wars universe is still the Star Wars universe even when there is no wars taking place. The same is true for me when it comes to Star Trek, they don't have to trek in order for it to be Trek.