It's quite over-simplifying to say it's just for nice things ... Most of the times it's to make a living. And sometimes to have business you might lower your screening requirements. This is maybe where you can find the other fish in the sea ...
It's cultural and showing the need to be seen, heard or even acknowledged. In Asia, saving the face or avoiding shame in front of society is important. Like in Japan people prefer to end their life without anyone knowing. There is this infamous famous forest where some people go to do so: Japans...
It's sad news and that's why when I can I try to listen to people. Sometimes people don't share their struggles out of fear, discrimination, being looked down, etc. And sometimes a little attention to someone can make a huge difference.