More advanced? Who knows.
Aliens at all? I believe they exist because of a little something called the Drake Equation, which basically says that chances are really, really, really slim that Earth is the only planet in the entire universe that can support life.
Of course, there is that tiny possibility that we really are unique. Better or worse? Who knows?
Will we ever make contact with an alien civilization? Doubtful, given the enormous distances involved. Do we really want to anyway? Just look at what happened to the civilizations in the new world after the aliens arrived from Europe.
I think that someday it'll be more feasible, but then again I've been reading science fiction for my whole life. I just can't imagine that we won't ever figure out a way to travel faster than light without all those nasty relativistic consequences.