Everything is different now : social media, smartphones with cameras in them, society also changed the adult oriented and raunchy style of TV isn't popular anymore. The WWE is now public, WCW and ECW no exist, WWE lost the rights to the trademark WWF in a lawsuit which is why it's called the WWE instead of WWF. Stone Cold retired, The Rock left to do movies, DX broke up and a lot of those guys are all dead : Big Boss Man, Crash Holly, Eddie Guerrero, Test, Chris Benoit, Chyna, Grandmaster Sexay and even Owen Hart (who died while The Attitude Era was happening). It's just not possible. Yet so many people want it back, why ?