Michael's death really broke us from the inside out - the lack of foundation and unity in the fanbase now is a manifestation of that. I hope that some day we can come back together, but even six years on there is too much pain and suffering, and it blinds many people. That doesn't excuse their behavior, but I will bet dollars to dougnuts that's where it's coming from.
In 2005 and 2009 - those are the times he really needed us the most. That isn't superfluous hopeful wishing - it's the truth. The few people around him during the trial were adamant that our support and belief in him helped him immensely. He said it himself many times, before, during, and after. We were the ones there for him when no one else really was. And it was of course the same in 2009 - we needed each other equally, and we rose to the occasion of doing right by him, because there was no other option anymore, and we had to take it by the reins so to speak. We all have different opinions of the who's and whats around him during This is It, but everyone around him also said the same thing - us being there (Buying the tickets, showing support, the lucky ducks who were able to visit during rehearsals and see him) - that's who he was doing it for.
When the fanbase remembers, as a whole, that he still needs us now, just in a different way, that's when we will re-unite again.