(This was a reply to a now-deleted comment.)
>Is there actually a widespread "life and death" issues here? There have some very publicized cases, but I have yet to see any data that there this is a significant problem beyond having the police called to your house or getting bunch of pizzas delivered that you didn't order. That said, there are definitely dangers with governments who deny basic human rights.
>The bank account issue is really more just about normal identity theft and isn't really part of the topic either.
>I should add that things like "harassment" do not qualify here as those are normal parts of everyday life anyway regardless if your personal information gets revealed online.
>Are we sure we're not just participating in the typical online habit of blowing regular issues into 10 alarm fires?
>beyond having the police called to your house
That's understating the danger of the situation due to the militarization of US police (and also their duty to respond to what they think is a real threat).
These "SWATing" attempts usually go like this:
"Help, someone's being held hostage at [X] address, they have rifles"
SWAT team arrives and kicks in the door, guns blazing, kills all your pets [1], and might shoot you too [2]. So far there hasn't been a human death from SWAT hoaxes, just animals and injuries, but it'll probably happen at some point.
Is this a "widespread" problem? I don't know. In the communities I've been in, it is, though it probably isn't for the Internet at large.
Even ignoring the risks of SWATing, though, there are so many people out there who will try to find your personal information and make your life a living hell on a daily basis due to online disagreements. I deal with such people on a daily basis. Anonymity is absolutely critical and me to others who might cross paths with sociopaths and "e-road rage" types.
[1] https://archive.is/nu4Lv
[2] http://www.theblaze.com/news/2015/07/16/swatting-prank-ends-...