Because people usually only care about things that affect them directly. And a scary amount of people still think that mental disorders are not real problems. I've lost count of how many times I've told someone I had anxiety and the person said "everyone has anxiety sometimes" or something along those lines.
Well that's just horrible. I care deeply about what happens to other people. We can't just act like suicide is a part of life, because it's not a part of life.
For far too long people on the verge of suicide have been flat-out ignored by a society that's been made to believe it's the victim's fault. It's NOT the victim's fault.
No, it's not like turning off a valve, but recognizing that there is a problem and talking about it - even if it is on the internet - sure helps.
Idk if it was your intention, but it really felt like you were saying that people have depression because they don't want to see the good in the world. It's not about "convincing them to see things differently". They want to see things differently, they just can't.
Everyone has their own demons, but the demons look much scarier for people with mental disorders.
And they don't want to die either. They just haven't found the right way of getting out of their situation. :(