there's a hard-to-seperate relationship between thoughts, mood, and behaviour. have you ever considered that one reason why you are so pessimistic is you're depressed? guess what part of the equation anti-depressants change? or do you expect everyone to have to adjust to your measure of how you see the world when its not at all consistent with how they think, perceive, and act.
anti-depressants do a lot of good for someone suffering related effects. we know that stress strips neurons of myelin sheaths; contributes to an early death; and cognitive decline. when you're depressed colours quite literally seem duller (making the world look ugly.) its a condition that robs you of enjoyment, makes you too tired for self-improvement, and most disturbingly: robs you of your will power. it makes literally no sense to refuse treatment because of 'the corporations, man.' they have nothing to do with your well-being.
if you don't want to be a wagie you don't have to, but if you are depressed it would be sheer foolishness to avoid treatment because life can be hard. the two aren't mutually exclusive so i wouldn't turn this into a false dilemma. if a medical professional has told you to take anti-depressants its because a large body of work by thousands of researchers and clinicians indicates it would be beneficial for you. ignore their advice at your own peril, tbh. signed, a concerned jew.