If the refs aren’t overwhelmingly biased against the Saints, please explain this:

You just very succinctly explained why I no longer get excited, either before or during Saints games. The NFL has ruined it for me.
There is no doubt as to why I feel the same way: it is difficult to get excited for a post-season when you realize how fine the margin is between success and failure ... and NFL officiating so often and so critically is that difference.

Frankly, the NFL is not a just league. It may have never been, to be honest, but now it is baldly apparent to me. And that takes a big chomp out of my satisfaction with "competition".