I don't exactly mean to ruin other people's perspective on life and their happiness, but I think optimism and dismissal of pessimists/nihilists can be dangerous. I'm reminded of the phrase "Let them eat cake", in that people who are afforded the ability to be happy in life will not understand the perspective of pessimists and think there is something wrong with them or their way of thinking for being the way they are. Thus offering unhelpful or unworkable advice for a problem that they averted from the start. The reverse is likely true in that pessimists think optimists are insane for being the way they are, but in that sense it doesn't really matter since optimists don't have anything wrong, and if they do, they have the correct mental tools to handle it. Invalidating a pessimist's view on life, especially on a suicide forum, seems inconsiderate of their problems and, in a way, their entire life. People think the way they do for a reason and their suffering is very real. You may think life is wonderful or at least has the potential to be and that's perfectly fine, but there's a lot more to consider and this is why others may think life is not good and will not be good for future generations, or at least a fair amount of them.