So, if the NFL expands and puts a team in Florence, you will drop the Bengals and support them?I don't know.
Why don't you ask Ravens, Rams, Seahawks, Buccaneers, Colts, Cardinals, Jags, Panthers, Raiders, Ravens, and Titans what the point of following a new local team could possibly be?
It probably has something to do with being an actual fan of the sport to the point that you would like to experience the comraderie of a regional fanbase and not just be a boisterous outsider with no connection to a team other than convenient TV viewing schedule from 40 years ago.