I once had a 1.4 mile commute. I don't like walking that far, because it feels like I'm wasting time going so slowly. Driving wasn't practical, as I'd have to pay to use the garage, and walking from the garage to the office ate up any time advantage. That's why I rode. I did get drenched in a downpour, so having a change of clothes was totally justified. It doesn't cost anything (except a tiny bit of effort) to keep clothes at the office. Nowadays, I have everything: dress shirt, t-shirt, trousers, belt, underwear, socks, and shoes, because ya nevah know.