It's funny (funny peculiar, not haha) but I think the suicide one depends largely on how you first came to know and discuss the whole concept of suicide. When I was a young teenager, and discussing suicide with my mother (I think somebody local had killed himself) her belief was very strongly that if someone was determined enough to do it they would do it anyway, no matter what anyone else did or said. She was trying to get it clear in my head to never stay with a man just because he said he was suicidal - she saw a fair bit of that in her work. My default position then, a few times when friends have come to me really worried about someone, has been to alert family members or police, but to step back from the situation. That it isn't their fault even if it happens. Because nobody really has that sort of power over another. It might feel that way, but really, it is up to the person who is contemplating suicide.

My own near misses with suicide last year felt totally my own decision - I wasn't even thinking about anyone else. Certainly not trying to manipulate anyone apart from myself - trying to manoevere into a better, more bearable place.

The media and guidelines from charities, etc mean that when suicidal we get told a confusing message - on one hand we are told to reach out and tell somebody how low we feel (look at social media after Robin Williams died, for example) and then the result of this is people receiving chaotic messages that frighten them, about their loved one being suicidal, that they as laypeople don't know how to deal with. If the person doesn't actually do anything, or makes an attempt but survives, I can see anger as a defence against the pain and confusion as a pretty reasonable response from the person feeling manipulated.

Especially if you have never been suicidal - I don't think you can realise that one moment you can feel absolutely like you are about to step over the edge, and then maybe a few hours later, you are more ok again.