Hey Big Mac, you know as well as I do that we all see things in our favour all the time. There isn't a fan of any team that doesn't. I don't think that is being biased. Misguided maybe but it's what we want to be true not what is actually the truth. I think we have all been guilty of feeling badly done to by refs but let's face it if the refs went on strike we wouldn't have any games to go to!!!!!
We have to accept that the refs are all fair, even though I get carried away with the calls of cheat myself, for the sake of the game. I always used to think, in soccer as well as RL, that some refs favoured the top teams so that they could get into the VIP lounges for after match hospitality, etc, and get closer to the players and directors to get things for their kids, like signed shirts etc,. They maybe do, I don't know, but some decisions do tend to support that kind of thinking.
I also dislike a Yorkshire ref travelling over to Cumbria when we are at home to a Yorkshire team. We all know that a ref in the same area will get to know the local teams players very well and even get down to be being big mates with some of them. This then makes it harder in some matches to divirce that friendship from what they have to do. Not intentionally maybe but nevertheless the possibility is always there.