I get it, they're a fun villain. And the fact that they can time travel makes it pretty much inevitable they'll keep coming back, no matter how much the Doctor thinks they're gone.
I couldn't disagree more. Their voices are one of the most grating things I've ever heard (and not in a scary way, in a stressful and angering way), they look far too ridiculous and they're far too overpowered.
The Cybermen, on the other hand, always make for great episodes. As do the Weeping Angels!