Some people are fans of the Cincinnati Bengals. But many, many more people are NOT fans of the Cincinnati Bengals. This 2012 Deadspin NFL team preview is for those in the latter group. Read the other Why Your Team Sucks 2012 previews here. 1. Coach for life. The Bengals quietly gave head coach Marvin Lewis a two-year extension two weeks ago. Normally, a contract extension means nothing in the coaching world, since shitty coaches with contract extensions get fired all the time (Brad Childress being a prime recent example). But that's not the case when you're dealing with Bengals owner Mike Brown. Mike Brown would rather watch his own children die than eat a contract, and so you Bengals fans are in for at least three more years of Lewis, a coach who is exceedingly professional y…