As for the comic, I guess I'm the kind of person who tries to associate as much possible with people who share my interests in the first place. Does that make me an asshole? Possibly.
Only if you also try to demean others who are different from you!
Yeah, there's nothing wrong with having friends with mutual interests - but that's not what wero was actually doing - he was saying no one SHOULD have an interest in football, which is pretty shitty!
I got more into football this year in order to have more things to talk about at work with coworkers, and as a tactics / strategy nerd I'm surprised just how deep it is. It seems obvious in retrospect, but it's basically a round based real time strategy game, where the positions of 22 different units drastically affect the results. Athletic ability adds an X-factor to the game that makes it less predictable and ultimately more interesting.
Try new things sometime - you'll be surprised what you find out you like! There was a time in my life when I was a sportsball mocking snob - but now it adds value to my weekend that just wasn't there before.