Well for the P*triots it was back in 2000, but they play in a creampuff division. Still, give them their due.
The Broncos went 4-12 in 2010, prompting a petition signed by almost 18,000 fans calling for the firing of Josh McDaniels, who you recently suggested we bring in, and the birth of the website JoshMcDanielsSucks (too much profanity there to give you a link, try Google). Prior to that they were 8-8 in 2008 and 2009, and 7-9 in 2007.
Seahawks went 5-11 in 2009, and 4-12 in 2008.
Chiefs went 2-14 in 2012, after going 4-12 in both 2007 and 2009.
Packers 4-12 in 2005, and 6-10 in 2008. So really, not that long ago. Prior to last year, for the Ravens in was 2007. So if "THIS IS WHAT WE SHOULD LOOK LIKE", this is what we DO look like.
Guess who the winner is? Steelers, of course - you have to go all the way back to 1988 to find a 5-11 season. And guess what? WE PLAY IN THEIR DIVISION! and consistently beat them. So all your angry griping is just that - angry griping with NO basis in fact. Wikipedia is a beautiful thing, you might want to give it a try next time, instead of subjecting the rest of us to your rants.