I think generally I'm kind of interested in subjective experience, what goes on inside someone's head, that being all they really know of the world.
I don't believe, in the 21st century, in the balance of power system. This is a European idea of the 19th and 20th centuries.
And, so I set my goals on astronaut because, as a military aviator, it was, I considered that to be about the peak of a flying career.