Or worse add me to a "chat" with a complete stranger, without asking or having a clue what's going on in my life, just because they have similar health problems & live nearby & therefore that somehow means we will "get on" 
I've admittedly been quite blunt, but polite in saying "no thanks" & pointing them to suitable support groups. Though TBH I thought the acquaintance who thought this was an okay thing to do, would have at least apologise, rather than just ignore my reply all together 
DH thinks I was perhaps a bit blunt, but for some reason this is a common theme for me & other friends (never close ones) have done the same thing, I've had similar when going out too, to the point where I won't bother going to an event if certain people are there because I sure as hell don't want to spend a night out discussing ailments & nothing else.
It's not that I mind advising where I can, I often do, but I don't want this invasion of my privacy/personal space , if that makes sense & I don't understand why people think it's okay, especially if the don't know me well. Plus this weird presumption that I need friends & therefore I'm a good bet for anyone struggling with health issues that's feeling isolated. I don't need friends, I'm lucky to have plenty of old friends that I just wish I had more time & energy to spend time with.
AIBU to think this is rude, presumptive & to be peed off as I am more than just my health problems. Genuine query
TIA