The universe doesn't allow perfection.

Why does the universe go to all the bother of existing?

It is a waste of time to be angry about my disability. One has to get on with life and I haven't done badly. People won't have time for you if you are always angry or complaining.

There is a very real danger that we will kill everything on this planet now that we have the technological power to do so.

We won't know for a few years.

If there really is a complete unified theory that governs everything, it presumably also determines your actions. But it does so in a way that is impossible to calculate for an organism that is as complicated as a human being. The reason we say that humans have free will is because we can't predict what they will do.

A million million million million (1 with twenty-four zeros after it) miles, the size of the observable universe.