Exactly. Just the sheer number of songs you have to know, and then most of them have to be "popular" ones so of course you end up playing them over and over and over again at every gig. Sometimes you end up playing a few of the same songs in each of your sets, and if you are doing three sets a night it just ends up feeling like band practice. Oh and you also hate some of the songs you are required to play, so it's not like you are putting any real feeling into them anyway. Covers are just awful. I'd frankly rather be in a tribute band - at least if you joined one I'd assume it's for a band you really like.