I think men are the butt of the joke here. It seems to be mocking the weird pride some men have for living like sewer rats
I can very much relate. It was like this constant depression that felt endless even though there were short breaks of feeling okay. I felt alien and very different to “normal” functioning people and basically lived exactly how you described.
Eventually I stumbled upon someone talking about CPTSD or complex post traumatic stress disorder, it’s basically like ptsd but caused by chronic repeated traumatic events. A lightbulb went off as I learned more about it and I realized that I was in deep denial about being abused and neglected as a kid. I basically internalized what I was told growing up about being lazy, ungrateful, ect. There was also a lot of physical abuse for disappointing my parents so I became obsessed with all the ways I wasn’t good enough. In a fucked up way it kept me safe as a powerless kid. Criticizing myself viscously allowed me to get ahead of what my dangerous parents wanted and put energy into heading it off before things blew up. It was a survival mechanism that was killing me in adulthood.
Obviously I don’t know if you have similar experiences but the way you talk about yourself rings a bell for me, and as lame as it sounds learning to care about and love myself somewhat has been the only way I’ve made any progress towards being happier. When you start to have empathy for yourself you start to want to do all those things to take care of yourself.
All that being said even if you don’t relate to this at all therapy or some kind of mental health assistance is probably the way. Also sorry if this makes you uncomfortable or comes off as armchair diagnosis but I’m passionate about it because I wish the info was available to me before I spent my twenties in self hatred. As it turns out most people are not this hard on themselves and I had no clue. Wishing you well ❤️