No other team plays more interesting-and-exciting-to-watch (and, really, that's what's it's all about isn't it? I would refuse a million bucks to change support to an Italian team...) than Arsenal.
I've been an Arsenal fan since the 1979 FA Cup Final win of theirs over ManU. I've suffered through a decade+ of boring Arsebal football since but since Wenger took over, there is no other team my wife likes watching more than Arsenal (and she really has no real interest in football).