I watch Cubs and Cards (grew up in a community midway between them, and you pretty much had to be for one or the other...but Cubs are the ones I followed first (despite the influence of the 66-68 Cards)), and occasionally other games. My interest has waxed and waned over the years...since The Headache and disability came around, it's one of the few things I can stand to watch on TV. Going to a game is a risky thing, as crowds and noise (and heat and humidity) tend to make headache and etc., worse.
Don't see how anyone but the Red Sox are going to win it all this year, but there have been a number of times in recent years when the best record gets taken out before the pennants...