Iggy pretty much just has to go on stage topless, jump around, pull a few faces, drop his pants, shout the songs, and they're as happy as pigs in shit.
Exactly. I loved Iggy for being the standard Iggy a very long time. Then I left Iggy for still being standard Iggy many years later. Another while later I bought "Avenue B" as it wasn't standard Iggy. And I liked it. Didn't by the next albums - too standard.
Bowie has produced many things I don't like. I even got close to giving up on him. But then again he never made me lose interest - neither in his records nor in his shows. As said before: Diversity is crucial to his career and so it does make a lot of sense to harbour diverse aspects of his career in his shows. And that's not necessarily only those which please little EJ.
And I want to believe In the madness that calls 'now'