Let me clear all of this for some people.
The self proclaimed "Attitude Era" was presented by Vince Russo that would use explicit content to win over the war between them and WCW. Vince had to take the risk or else they would go out of business. It was very risky because they're sponsors would leave them but it was the only risk he had to take.
By creating the Attitude Era they had the rival team of the nWo, D-Genertation X. They had profanity and had hardcore matches, Sexuality content and the SOB character Vs. Boss storylines. Most of the Attitude Era's credit should be given to ECW because without them, it wasn't possible.
So when the war ended between WCW and WWF, their was no need for giving content that was not needed. So they went from the Attitude Era to the Ruthless Aggression Era.
So pretty much when WCW ended, so did the Attitude.
Now when people keep on saying "BRING BACK THE ATTITUDE!" I find it stupid because their is no need for it at this point. Who is there competition? TNA? I don't think so. They have so many sponsorships and I doubt they would like to give that up. The reason Wrestling isn't as good as it used to be is because of crappy storylines. Sure blood should be used at some points but it's not needed every show.