So you "believe in" O-Sensei. Some have "believed in" him so much that they saw him vanish, dodge bullets, and leap tall buildings in a single bound. When you don't understand what you are watching, you might create a rather fantastic explanation for it.
"Any sufficently advanced technology is indistiguishable from magic"
(forget who said that, Asmiov or Clark I think).
Not everyone's studying Aikido, and studying it with the intention of becoming as good as they possibly can, because of O'Sensei or anyone else involved in it. Some of us can justify the expense and time by stateing that we want to develop the skill set because we LIKE the skill and want to be good at it.