Yeah, for those who are being negative about the Cubs, many teams like Dodgers, Padres, Mets, even Brewers were less than .500 in the last 10 ~ 12 games. I get frustrated, too, but seeing other teams' results, the Cubs aren't too bad.
The main reasons why we get so frustrated are 1. the Brewers happened to be in the same division, 2. the Cubs were awesome early in the season with harder schedule, but they're not lately, I'm talking about the offense, of course.