That's why some instructors are reluctant to allow it as a resource for research projects.
However, the goal of Wikipedia is to promote accuracy and neutrality in its articles. Articles are classed according to how complete and well-researched they are, and volunteer editors spend a lot of time dealing with content that lacks enough credible references.
Depending on the topic, Wikipedia has some very thorough articles that can serve as an excellent first stop for researchers. There are other articles that aren't so complete.
That's where librarians (and you) come in. Through February 3, you can participate in the #1Lib1Ref project. The goal is for each participant to add one reference to a Wikipedia article.
Not sure how to begin? Wikipedia has some great tutorial pages. Go get your feet wet! You may discover a new hobby.