[kachapopopow]

well there's tons of psychopaths in the world, it is a real mental disorder - considering he has a wife and kids it's probably manifesting as an outlet for fustration with his current life so yah I guess you're right that people can hate you for no reason, but it would be more correct to say that people will let out their fustration on random bystanders.

as for people causing others to kill themselves, well same could be applied with the slight difference of them turning that into a weapon to use against others as a coping mechanism.

this is really a topic that deserves very long and thoughtful discussion that you cannot achieve in hackernews comments.