Some people go to Switzerland for specific chemicals to render them dead as fast as possible, since they see it as preferable to living with Alzheimer's.
Admittedly it seems like a bit of a gamble to just start popping drugs whether they've been studied or not, but people spend lots of money on "natural" supplements which are at least usually reasonably safe but are even less likely to work.
Yes, obviously. But what about new chemicals where testing has been done, without significant observed damage? Is that considered safe after enough observations, or would a single fatality skew your risk-minimizing behavior?