Tbf why would you extend you stay more than the bare minimum necessary. It makes sense that people leave, or leave here. If you get into the habit of checking out the forum daily like me it just means you're stuck in a personal hell that's not painful enough to push you to suicide but neither to stop thinking about It altogether.
Some of those people may have decided to end their life already, but I believe that you are correct.
However, I also see a stay within this community as beneficial from an easy exit standpoint - meaning that it's beneficial just to have gone through the steps that may be necessary if push comes to shove, and have an easy step-by-step instruction for oneself if life gets too tough - much like preppers who buy a lot of food and other necessities in order to stay alive for long periods if a disaster strikes, but the other way around.
For example, one may not want to buy N or SN, but it's beneficial to know how to tie a proper hanging rope, in case life takes a turn for the worse. You could call it "suicide prepping".