You're absolutely right, it was unforgivably crass of me to imply that students at Eton are not absolutely normal young people, despite the wealth and privilege their position brings. I have very little to base the prejudice on either, in my life I have only known two old Etonians, one was an arrogant thug of whom I was (as an adult) genuinely frightened, the other was a psychological mess, deeply disturbed by the treatment he received at the school (he was gay). But I'm sure these two were exceptions and all the others were fine. Please accept my apologies.
Don't forget Boris, Cameron and Rees Mogg to name but a few. But again, probably all the others were fine.