Of course you should, shutdown.
The tickets ARE incredibly expensive, even by U2 standards.
And the band, by accepting to kill a well-working, fan-friendly service like Propaganda, only to replace by crappy little 'ol U2.com and corporate monster Ticketmaster, have dropped the ball.
In this particular affair, facts speak for themselves.
As much as we all love U2 to death and recognize the fact that this isn't entirely their fault, it doesn't mean that, as fans, we have to take and accept everything that's being thrown our way.
In love and mutual respect, it takes two to tango, they say.