It's SO much different. If you've ever been to a sporting event, like a football or hockey game, it's sort of like that. You feel the energy and are part of the experience. Plus you have the opportunity to take in all the little nuances that come with being in the live audience like being able to look where the camera isn't and see guys setting up pyro for an entrance or little segments that take place in between commercials.
Also, this. ^
