When 'off duty' Rowan wears normal clothes, just like you and I. When 'on duty' as archbishop, he dresses smartly in a suit, with a reddish purple shirt (as worn by all bishops), a white 'dog collar'...
People first started wearing clothing for warmth. Later only the rich people could afford lots of clothing, so they did. This eventually turned into people buying the nicest, most expensive clothing...
Because it's the law.it is the law because no one wants to see your flopy dick, six-flab, or butt cheeks. :Dthis is also why i hate speedos. if you wear a speedo you are gross.