Conveniently I could say.
Like Epic, think how many more "fans" city have now since they became the richest club, it's human nature to want to be the best, or in this case associate yourself with the best, I don't agree with it but can see why it happens.
I myself supported Chelsea when we were shite in the early to mid 90's, however in the late 80's my teams of choice were Liverpool (obviously) and villa.
These choices as a young kid were mainly because Liverpool were awesome, and really the only team that seemed to be on tv in those days, it was only as my dad started to take me to Chelsea in the early 90's did i actually start to care for a team, win or lose, and there was a lot of losing in those days.
I was just lucky that little did I realise that a few years later a certain Mr Hoddle would come in start the evolution of the club, and then the Zola era.
It's a personal choice, everyone has there reasons, if you are a glory hunter and have joined the city or Chelsea bandwagons over the past few years, hey your choice no problem with that, but that to me makes you a twat and I've no time for people like that.
I'm the same if I'm in conversion with people watching a match in the pub or whatever, and that person is slating how bad a certain player is or what a team is doing wrong, yet this person has either never played football in their life or ever been any good at football themselves, again that persons opinion means nothing to me.
Cannot see how you can be majorly crap at something and then think you can judge a player.
Like me hammering a rugby player, when I've never played it or really watched it, what the hell do I know ?