Are you all trying to warn off mere mortals before we get out of our depth?
Nothing new in that. I recall my father telling me that you could only fly if you were super fit, and had to be able to hold a column of mercury by blowing up a tube. Looking at his logbook, he was used to flying in open aircraft at 15,000 feet without oxygen and in Blenheims at 25,000 in 1939.
For inspiration in flying go to a flying club; this is just a soapbox, compare it with Hyde Pk!