One of the factors behind depression in the contemporary world is excessive consumption and the comparisons that capitalism brings with it; also, the liberal ideologies of leaving home and trying to be “independent”, beat culture, in short.
Generally, depressives have a very large consumption habit because of their closeted perplexities, and they are always destructive addictions (not that I care about you), like marijuana and other types of substances, and as the guy above said, about substances that lower your IQ, is partially true. For example, it has been proven that marijuana is a substance that causes dementia and causes you to have the symptom of forgetfulness over time, decreasing your cognition.
I wouldn't say that depression in itself makes you completely horrible, because the philosophy of behavior is not always a bad thing, like you being lazy, that's not really bad, because in itself the world is fixed in the eternal present, all living beings live by sucking basic sources from the earth itself, and end up dying there, at that moment. But yes, there are destructive behaviors, like substance use, pure hedonism, you try to combat pain with more pain, instead of just letting go in a healthy way.
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