If someone ever thought of suicidal, I think it’s already too much for them to handle. We can’t generalize peoples pain tresshold because it’s not the same for everyone. Someone is coping better with pain, stress and depression than the others. So we cannot blame people for having low tresshold. Maybe it’s just feel unbearable for some people.
Let’s not pity or blame their shortcomings let alone dismiss them. They needs someone to confide in, someone who wants to listen, not judgmental and caring enough to stay by their side. So they can increasingly coping with whatever-counterpain-they’d-need in order to loose some pressure and pain that had been build up.