On one hand, the movie's failure is a little puzzling. Saturday Night Live may or may not be as good as it was when you were in high school and college (those were the "best years": whenever you, personally, were 18-24 years old), but it continues to be a significant part of pop culture. The average episode gets about 9 million viewers -- more than any of NBC's Thursday night comedies, for example. If SNL were a prime-time show, it would be in the top 40 in the Nielsen ratings. You'd think a movie spun off from a currently popular TV series would be able to promote itself well enough to get people into the cinemas.
But on the other hand, SNL's history with movies is notorious. Movies starring SNL alumni: often great. Movies based on actual SNL characters: almost always terrible. The few exceptions show that it's possible to make a good SNL-based film, but for some reason it rarely turns out that way. So it's understandable if viewers were wary of MacGruber, even if the last SNL debacle, The Ladies Man, was a decade ago. Some wounds never heal.
My earlier post on this subject theorized that bad SNL movies of the past made audiences very skeptical of this one, no matter how many good reviews it got. (It's the fourth-best-reviewed SNL movie of all time.) But there may have been other factors, too. So we come to you, the people, to ask why you didn't see MacGruber (or, if you did, what you thought of it). Vote in the poll, and feel free to elaborate in the comments.