You find that you do, no matter your best intentions because of social pressure (or saurian mind-powers, you decide). My Mum met Andy and Fergie when they visited her school and she swore she wouldn't curtsy. So the big day comes and the royal duo are working their way down the line of teachers who all curtsied and when they came to my Mum, she crumbled. I think the photographers even captured it on film. She was disgusted with herself and I'd be giving her shit about to this day (especially after the Epstein business) if she hadn't been inconsiderate and died. If there's an afterlife I am sure she's there thinking "he wouldn't it lie!"