I still like Sad But True, but you actually like Enter Sandman?
I don't understand bands like Iron Maiden, that record all these incredible songs over the years, and keep playing virtually the same stuff over and over again. I would think for the band's sanity's sake, they would want to keep bringing out new stuff. Like when Steve Harris saw The Iron Maidens in Mexico and he commented on Alexander the Great, "Still doesn't make me want to do it live." Uh, why not dude? Is it painful for you?
I'll never understand how a band can play the same setlist every night for 18 months. Then next tour, do almost the same thing. Springsteen, Grateful Dead, Radhiohead, are 3 of the few bands I know of that don't actually play the same setlist every night. I mean lots of bands will alter a song or two, but I mean for the most part.
I guess bands feel the new album songs is their new addition to the setlist, and fill the rest with classics.
Actually, I think the Grateful Dead said, since they never played the same setlist twice in their entire 30 year span, they actually got sick of almost all their songs, because so many were in rotation.