As Marina Hyde said last week, the nation has become obsessed with 'misery lit' and that includes reality TV of all sorts including Race Across the world. It all started with BGT et al with the sob stories as others have said.
Escape to the Chateau is another great example and shows like it. It really isnt hardship or adversity at all. It's middle class performative nonsense. I've also started to notice it in my recommendations on Audible. I'm finding it harder to find things that don't just totally annoy me. It's largely regurgitated, repetitive shite. There's just too much of everything out there now. I listened to a snapshot of a book called Midnight Chicken. I thought it would be a cookery book right up my street, but no, it is navel gazing misery personified. I love Miranda Hart, but even her latest book was all about how she had hit rock bottom but then found love and what worked for her - which wasn't actually that enlightening - and a disclaimer that she was actually still struggling a lot actually.
I changed my preferences on Audlble to Nature, and still it comes up with people finding the meaning of life via rewilding (or not, as the case may be) You just can't escape it.
Nobody really knows the meaning of life, and nobody has found any miraculous cure to any awful, lifelong (and certainly not terminal) illnesses, so I hope publishers will stop churning out this utter crap. Most of which is lies anyway.