In consideration that the entirety of the NFL season operates on the "any given Sunday" approach, there are always surprise teams, and that the Bills won six games *despite* having an offensive line picked from guys in the stands, half the team on the injury list, a marketing guy as GM and Dick Jauron as coach, of course you have to be optimistic.
When you can win six games against *all* those odds, imagine what you can do with less injuries, a solid draft, and a GM and coach who knows what their doing?
Why not be optimistic? The only direction the team has...is up.