Aum Shinrikyo cult

So does anyone actually know why they released sarin on the tokyo subway, stockpiled chemicals to make enough sarin to kill another 4 million people, attempted to buy nuclear weapons/materials, and get a thriving culture of ebola, because seriously noones explained it to me, I'm in the dark here, what am I missing?

[Vanhalla]

When you believe that the end is near, some choose not to sit around and wait for it to happen.