Football and the pinch of salt

I like watching football.  I support Liverpool.  But I view my support of them as a bit of a hobby.  I think I am less fussed about how they do than many of my friends are about their own teams.  I would like to support them more ardently, but I don't think I can justify it.
The reason for this is that I don't think I can trust the results of many (maybe even most) football games.  It seems to me that most games have at least one significant moment where a game-changing decision is made incorrectly.  I've posted on this topic before, but until recently I hadn't noticed just how often this happens.  It might be a goal wrongly disallowed, or a dodgy penalty decision, or a mistaken red card offence.  Big decisions that change the game.  It seems that a large proportion of games have these incorrect decisions, so I can't trust the results of quite a lot of games, and hence leagues and cups.  Therefore is it pointless getting too worked up about supporting a team.
I still want to enjoy watching football, but I intend, more than before, to take it all with a large pinch of salt.  I'm happy to associate myself with a team and hope they win games, but I want to not get too worked up about whether or not they do.
It's a shame, because I would like to support more fanatically.  I just can't justify that much emotional energy in something that produces such untrustworthy results.