FWIW, I have the same mindset and your comment resonated with me; suicide is a very taboo subject still. The responses to it are either: you need to seek help for mental illness or you're just acting like an edgy teenager.
The term "mental health" is quite terrible because what are we using as a baseline for "healthy" when we throw that term around? No one can answer that. I don't think everyone using that term is being malicious but they don't realize how patronizing it is.
The problem is I don't think the initial reaction is incorrect. How does one tell the difference between someone in pain crying for help and someone that's genuinely ready to go? You can't really, not without long conversations.
What gets to be a tired argument is with people that seem to believe that the former is the only possible explanation, and refuse to believe that the latter is even a possibility. For them I think the problem is that challenges the belief that life is to be held upon a sacred alter above all, and that such a belief is held to be a universal truth.
It's hard to step away from such a belief because it opens an uncomfortable door in asking what makes being alive to be preferable, who gets to decide that, and what if anything should be done about it.
The term "mental health" is quite terrible because what are we using as a baseline for "healthy" when we throw that term around? No one can answer that. I don't think everyone using that term is being malicious but they don't realize how patronizing it is.