Lol...suffering? Really?
They WON 2 Super Bowls in 20 years. Ask fans of the Browns, Bengals, Chiefs, Chargers, Lions, Jaguars, Eagles....you get the point. For goodness sakes, the whining is awful.
The NFL is basically mediocre in general, except the Patriots. It's partly by design, with salary caps. Owners want to win, but the system doesn't allow you to keep your core without over paying a few, and it handcuffs rosters. Belichick seems to be the only coach capable of letting people go and plugging the void every season.