In reply to Submit to Gravity:
I'm in the process of falling out of love. I was brought up by my dad as a Man City fan, have supported them since they were the second division, so by rights I should be loving it these days. Now, though, my team is hated for being rich and successful. We're criticised by pundits with no sense of context. Fellow 'fans' forget our recent history and call for the manager's head when we lose any match. Then they start throwing coins at opposition players.
Historically I always enjoyed watching good football from any team, even Man Utd. Used to support them in Europe always, loved watching Ronaldo play. Now I'm subject to vitriol from their fans through virtue of being a 'threat', so I find myself hating them. It's just a big negative spiral and it's rubbish.
Supporting a big team is just like being addicted to smoking. At first it's a little bit cool, a little bit novel...but very quickly the good things become vanishingly small and the bad things get worse and worse.
I think I'll go back to supporting my home team, St Mirren. They're rubbish and always will be, but you never feel disappointed and it makes the occasional good times extra special.