It's certainly not because they truly care about others. Those who are called to stop suicides do it because it is their job, as well as it being against many people's views on what is "right". They want money from you, and you dying gets rid of one more person that can be treated as a slave. There are exceptions to everything, but preventions that aren't caused by someone close to said person are rarely done out of any real sympathy. They know nothing about you and will most likely never see you again afterwards. People care more about the act itself than what led the person to attempt in the first place; it's not something that crosses a lot of people's minds until after the fact. And at that point, it's out of their hands unless you try to kill yourself again. Then it's just an endless cycle that can increase in severity.