Insanity = watching the Bills do the same thing over and over again and expecting different results.
The first year I really paid attention to the Bills was 1968. I was brought up on a losing franchise. But every 5-8 years, they would at least be competitive for the playoffs late in the season. This long stretch of mediocrity, with no late season excitement except for one miserable Steelers loss that i attended, has taken the "sails out of my wind".
Also, I think the media oversaturation of the Bills and NFL in general has taken some of the shine off it for me. With that oversaturation comes so many depressing/embarrassing disclosures about the players, it's tough to get excited about them.
Free agency has also lessened my loyalty to the players, because in most cases, they turn over so quickly. In the past 15-20 years, they just haven't had many players that are really excellent and have the ability to make game-changing plays. At best we have had a bunch of guys that belong in the Hall Of Very Good.
I will say, I just watched the 4th quarter of the second jets game from last year and enjoyed seeing Tyrod again - he and several other guys were pretty fun to watch again. Right after that, I put on the Green Bay game from 2014, and even though the Bills won, it was depressing watching Kyle Orton and some of the other guys that were on that team. They just weren't very good, and it's hard to believe I was excited to see Orton start games - only because EJ was so bad. I turned that Green Bay game off after the first period.
Add all that up, and I still enjoy watching them win, but don't have expectations that they will make the playoffs anytime soon. Keep the expectations low, and maybe I'll be pleasantly surprised!