I never used to say thank you either, actually it's just something I started this year, why should I have to thank Somone for making me feel uncomfortable right? Haha anyways I didn't know what to say I'd just freeze with uncomfort so now I say thank you just to kinda releave the tension. I feel the same way as you do about people touching me, like an acquaintance came up to me in a resterant and put his hand on my shoulder I was just repulsed, like really people should not touch people they barely know. Anyways glad I'm not the only one. Also as for me thinking it's prideful I don't feel that way. It just makes me want to run away from them like I'm scared or something.