Past user here. Cocaine is the most sinister substance on earth. It convinces the user that nothing is changing and nothing is different while everyone else realizes it turns the user into a terrible person. Every time. No exceptions. All drugs change the user, but none deceive the user like cocaine does. Dealing with a long time friend right now that's on it and I hate it because he gets rare moments of clarity where he can tell how bad it is and confesses that he knows he needs to stop, but he just doesn't all the while he's more and more of an asshole that doesn't prioritize life correctly anymore. Going to take divine intervention to change him as it was only God that took it from me.