Exactly! I was also always the quiet one, the shy one, the outsider. And so far I haven't killed anyone (okay sometimes in my mind but that's not the same)
And as less as all quiet people become killers, or people with a bad childhood, as less become all mental ill people killers. Often enough mentall ill people are very nice and peaceful.
You can't tar all people with the same brush, no matter in which way. Always there are this kind and that kind of people. To say they are all the same is just wrong.
We both are proof for that
And so are many more.