Here are a few reasons IMO. Not great at anything Not outstandingly horrible No star players. lack of playoff success lack of players getting in serious criminal trouble in the last few years Fans that are friendly, not wild, and not a large amount of them NO nationwide fanbase. And until last year, a good portion of tennesseans were manning/colts fans. There isn't really any area where there is a huge 90+% concentration of Titans fans, as far as I know. A few Holdovers in Texas, a bit in Tennessee, and a few small groups scattered elsewhere.