/lit/ - Literature

Okay, I get all the rage with being physically good looking but can someone explain what the fuck the point of dressing fashionably is? I keep trying to look up reasons why one should dress a specific way but short of attracting women, I cannot find a single reason why I shouldn't just wear track suits and army fleeces because pure /comfy/. On that note, what even is fashion, is there any literature that defines it and its purpose?