My first thought: I'll leave when I'm dead.
So I clicked these:
I can’t get any merits or trust, so I don’t want to be here anymore.
By the time I turn into a shitposter, it's time to leave.
Age, family, life, and/or personal problems prevent me from being active.
Family and personal problems always come first. But as long as I'm not dead, I assume that's only temporary.
Death. Though I may still haunt the forum after I die. Haven't decided yet.
If you do, please screenshot
https://bitcointalk.org/myips.php and post it

Other members> <may have mentioned it when leaving the forum, Lauda
There's an option missing from the poll: personal safety, privacy and/or taxes. Lauda's post made me feel like (s)he) left because of safety:
unforeseen pressures in the shadows leave me no option but to leave the forum permanently.