people tend to not handle these 'negative' thoughts too well. they tend cower, begin to try to figure out how to help, or would recommend you to the nearest 'professional.'
i've already scared off a few people online because i was being honest about how i was feeling after asking how i was doing. the question "how are you doing today?" is such a misused and lazy way to communicate. you're basically expected to respond "good" but when you reveal you're not doing well or worse, they don't know what the fuck to do with that response. i was tired of pretending things were going well.
if you have to word it a certain way just to avoid a shit reaction from them, then they're not the right people to talk to. even therapists/psychiatrists are pretty bad with this.
this forum, for the most part, is a safer place to talk about how you're feeling, but there are still highly judgemental people here that lingers.