Because CSUN is mainly a commuter school, that makes it hard for students to have a lot of school spirit about sports and the school in general when they aren't all living on campus. Also, because of budget cuts in recent years, a lot of resources aren't offered to the athletic department, causing even less school spirit from students. To make matters worse, the school lost its football team in 2001, which to many ushered in the end of an era. In recent years, students have tried petitioning to bring back football, but unfortunately, they have yet to succeed.
This doesn't necessarily mean that athletics are completely lackluster at the school. Students tend to see school spirit depending on how active they are. Some bleed red, black, and white, while others aren't even aware there are sports on campus. However, there are opportunities out there. There's a gym, swimming pool, and other facilities in which students can partake. Plus, there are club sports and varsity teams, too, with most students concerned with the former rather than the latter. This kind of atmosphere is great if you are into a laid-back sports vibe, not so great if you are looking for intense rivalries and competitions.