Well realistically, what else DO clothes need to do?

Where I work its permenant dress down anyway, so im sat at my PC in a top that cost a fiver some jeans that cost 15 quid, some shoes that cost 50 quid and I think my boxers and socks probably cost me about "3 for a fiver" or something each. Im wearing no jewellery as im not gay and my phone as a clock on it so I dont wear a watch as they only get caught on stuff when you are doing practical tasks anyway like changing a turbo or whatever.
I just dont feel the need to be dressed any differently to I am now, I dont see how it would enhcance my life at all if i was sat here in a grands worth of clothes like some folk do, plus it will get covered in oil when someone at work buys a new car and I end up leaning in the engine bay looking at it or whatever anyway.

I quite like good quality shirts with my suits when I have to wear one as they feel nicer on and they last longer, but I just dont see the point in "dressing up" really in terms of socially or at work when Im not seeing clients etc, it just seems to me to be something that people who arent confident do to try and make them feel better, a bit like ugly birds and makeup, lol