Most of them.
BMJ and Rekeita in terms of addiction, for sure.
But most of them remind me that for as fucked up as my life has been and as much as I have fucked up trying to recover from it, I am lucky and grateful to have had the mindfulness and self awareness to reflect and introspect and grow and change and go outside and travel and make friends and fall in love and do some really cool things instead of pissing my life away playing video games and getting high and gooning and malding on twitter all day.
The world is full of more vice than ever before and it's helpful to have cautionary tales.