It seems as though this show is wearing out it's welcome in my opinion. I, too, and sick of seeing the same dances all of the time. Of course they are hard to do, but once you have seen them all the time, it gets old.
The dances may be the same but the people change each season. That is what makes it so good. I don't think it will go off the air any time soon. Many, many people still vote for the dances---so the viewers must be watching.