Ohhhhh my god, I know what you mean. And I absolutely love this thread. 
I have also become absolutely sick to death of hearing about other people's problems and 'issues.' Whether it's at the local hobby groups, or a checkout/standing in a queue, or walking around the shops and the high street, or walking around my village. People stop me, and tell me about the surgery they're having next week, the fact their husband/wife died 10 years ago, they can't get a plumber in to fix their leaky tap, they can't get to see a doctor for 5 weeks and other issues and problems in their life.... (I am sorry for anyone whose partner has died, but I literally don't know this person from Adam, and most of us by middle age have lost someone we love.)
I had one woman, cornering me for half an hour the other week (on a walk in my village.) I didn't know who she was, but she spent 97% of the time just talking about herself and her 'problems.' When I tried to talk about anything else, (in the 3 breaths she took in 30 minutes!) she just looked the other way for 2 seconds, and talked over me/carried on talking. After HALF AN HOUR, I literally cut her off mid-sentence to get away - and said 'anyway I gotta go, I have an appointment,' and I jogged off. She looked like 
I didn't care!
I don't look 'kindly' at people and smile a lot at them. I actually don't look at people when I am walking around outside/in the shops. I try to avoid them because I can't be bothered with other people's chit-chat and problems. I've actually done an extra 10 or 15 minute walk down another road to get home, just to avoid speaking to somebody in my village, that I know is going to keep me talking for 20 to 30 minutes. I don't save much time (as my walk is longer,) but at least I have just my own company, and am not bored shitless by someone else's problems.
It's the same thing on '24 hours in A and E' and 'Ambulance' and similar emergency services programmes. These used to be really good and interesting programmes.' But now every single patient and their family has got a fucking story to tell ... We have to hear about their whole life, along with a sob story, about every illness they've had, every loss, every financial issue, every family drama, etc.. Along with how long they've been married and how many children they have, how many grandchildren they have, if they're 80-odd how they met their spouse at a barn dance in 1963, and how HE worked 75 hours a week down the mines to look after her and their 7 kids la la la...
And now it's moved onto the paramedics. They're starting to come out with their life story/sob story, like how they lost their dad when they were 23, how their first husband left them, how they struggle financially with having to support their little boy, how their mother can't get out much, and they have to take her shopping twice a week. Sob story after sob story, that are all what many other people go through. I'm sorry they have issues and problems in life, but why does everyone need to hear about it? It's actually ruining the programmes.
I literally do not give a flying fuck about other people's problems. I just don't. Fortunately I've not got many problems in my life at the moment and I'm quite lucky right now. But up to the last probably 7 or 8 years (aged 50-ish now) I had to deal with a bunch of problems and losses in life. Including being bullied at school, the death of my parents in my 30s, big financial problems, a business going under, marriage problems for a few years, problem after problem with a house we owned, coping with my children being bullied at school, and being bullied out of a job once (myself.) AND we had neighbour problems that drove us out of our house about 15 years ago.
I've had my problems - and losses - but I never used to corner people and start blathering about them for an hour. Everyone has their problems, why does anyone think everyone needs to hear about theirs? And why on earth would anyone tell a stranger about their personal problems (and losses and bereavements?) 
And like a previous poster said, I'm sick to death of being told we need to talk a lot more about menopause, periods, depression, womens health, children with SEN blah blah blah ... when (as they said,) we don't seem to stop talking about these issues (and similar ones.)
Every other woman and her cat, and every other man and his dog, and every other child, seem to have some 'issue' or 'problem' that we must ALL know about. They tell us about it all, or post something on the Internet (for Internet clicks and likes and attention,) or attention in the street. It really does my head in. I think this is why some people hate picking up the phone now! Don't want to be trapped for an hour by someone boring them to death with their 'problems...'
I think it's gone too far now and people always share far too much and I can't be arsed to hear it! And as has been said, these people only want to talk about themselves and are not interested in you. Drives me absolutely batshit. I'm so glad it's not just me, and load of posters here feel the same!
It's very hard to avoid it at the hairdressers though. One of the reasons I stopped going, and do my own hair now! (Stopped when covid hit 4 years ago, then never went back after realising I can do my own hair!) It's such a relief not having to hear a load of drivel and bollocks for 2 hours, whilst trapped in the chair!