WTF?

You folks have made some really fine programs (Cold Squad being my favorite) and my wife loved several of your shows, but here's the deal: Your powers that be seem to have a thing for canceling programs at the height of their popularity and with reported high ratings. Your broadcasters seem to be somewhat suicidal. Going so far as to move shows around to make sure they get cancelled. Is it that cold and dark up there?
Our shows with high ratings are only done for after a gazillion episodes and all concerned have had enough. Like I said; WTF??????