I think we see things differently. I view conversation as an offer, with no expectations either way. Whereas you seem to put more weight on it, I'd guess because the ADHD you mentioned in another comment means interruptions are more impactful for you. I'm not sure there is a way to bridge this gap, because for me (based both on my understanding of modern psychological research and personal experience), a world without talking to strangers is a much impoverished one emotionally and spiritually. I'm afraid I'm willing to throw your mental wellbeing out with the bathwater on this, though I feel bad about doing so.