Being a computer user or programmer is signing oneself up for the death of a thousand cuts. Like I just want to try ScalaJS with ReactNative on Linux (yes I know that's insane out of the box, but it really shouldn't have to be) and before I can even get anywhere I have to get sidetracked because when I do apt update I get

W: Failed to fetch http://debian.sourcegear.com/ubuntu/dists/trusty/main/binary-amd64/Packages  403  Forbidden

and debugging / fixing that is a freaking nightmare adventure of hell all in and of itself. Because it would be too freaking hard for apt to figure out that gosh maybe it should try some other mirror then, I guess?

So then I try to use the standard tools to fix it, only to re-encounter for the zillionith time the fact that GTK or whatever the hell this stuff uses is itself fundamentally a horrible piece of broken ux dog excrement that cannot even handle drawing scrolling lists of check boxes correctly.