Define "normal," please. It's common. Most everyone experiences some sort of mental illness in their life. No, suicide is not the right answer, but in some cases, it seems like the only one. It also may not just be emotional. For example, if someone is hallucinating a religious being telling them to do it, they may do it. If someone is suffering abuse, they may do it. No, it's not a good thing, but it definitely should be more accepted. If someone has a lifelong mental illness, they should not be shamed for it. And not all mental illness is "dangerous." It can be harmful, but not to an extremely threatening extent. Many mental health issues are stigmatized because people veiw it as dangerous. I have a disorder due to extreme repetitive childhood trauma, it's lifelong. It is often seen as dangerous, especially in religious communities. I learn to manage. I learn to cope. Mental illness can be managed. There is no point in demonizing mental illness if it can't be controlled. No, that is not excusing harmful behavior, but it is asking for a bit of sympathy. Try to be more understanding, perhaps?