Mark Cuban can be obnoxious, but I'm right behind him on this one:
Why I Don't Wear a Suit and Can't Figure Out Why Anyone Does!
Never owned a suit, never intend to.
I own a suit. I bought it for my wedding. I also own a tux (which I've actually worn twice!). But for work I wear jeans, polo shirt, and sneakers. Shorts in the summer when I bike in. And no, I'm not employed by a slaughterhouse. I sit at a computer in an office.