Hereditary

Brutal, cynical, strong depiction of mental illness and grief (and Satanism)—just your simple, non-polarizing subjects. 

I need to stop watching horror movies. They certainly heighten one’s awareness of a certain dimension of life (the actual mortal struggle of good and evil), but I’m yet to be convinced that they can achieve this good through means which don’t counteract that good (cynical, almost sadistic depictions of that evil and its aftermath).