As Gazza said, he was never going to make all the shows. Wasn't expecting this to be the reason though!
Me either, I got tickets early on about the 11th show which is now the 8th show so thought there was a chance I would see him, plus being one section over from the stage in the 100 level was great just off the floor! £85.00 wasted now though although its on a visa card, perhaps can get the money back!, Was never going to do 50 shows anyway..... He said he only wanted to do 10 but his management company upped it to 50 due to ticket demands etc. The shows were never going to be great, lets be honest michael Jackson is not a former shell of what he was but the entertainment and theatrical part of ths show would have been pretty cool.
Probably stress etc with the tour had something to do with it all. I think an insurance company would only insure the first 10 shows due to his health as well... expect the tour to be suspended indefinately, I doubt you will see the word "cancelled" mainly wacko jacko is likely to come out and say "i want to see all my fans, i love you" so.....