What I meant was that when you take any mind altering substance, you open yourself to be controlled by evil. I have no idea what your beliefs are but mine are that there is evil roaming, looking for people to "use" and control.
I think we fundamentally agree. However I believe most people would under certain circumstances and situations “entertain the thought of killing another” While dismembering is a logistical act in most cases ( Dahmer being an exception) I believe those that are secular oriented would get there easier than those that dont. Drugs may lower the inhibitions a bit but the “entertained thoughts” are what the cause of it.