It was he said, he said. No pictures, no witnesses. So, it wasn't solid evidence as in pictures of sexual abuse, or witnesses, etc. I think if there had been solid evidence, the state attorney would not have offered a plea based on the sensation and high profile of the cases. There was money involved, and shady family members, greed (I'm sure) so there was and remains a lot of big Question Marks. MJ was his own worst enemy. And yes, his obsession with secluding his kids to the point of totally isolating them is a reflection of his emotional, if not mental, issues.