Cuffed Sleeves and Malpractice

            Not much else can ruin your day quite like getting getting guts and various other bodily fluids all over the sleeves of your sharpest looking suit.

Second only to being seen crying while watching Twilight. 

          Much like you, the dapper surgeons of the 19th century decided that bloody sleeves must become a thing of the past. So, instead of discovering new medicines or groundbreaking surgical techniques, the 19th century surgeons invented custom-tailored suits which allowed them to roll up their sleeves for impromptu surgery. And thus cuffed sleeves, or "surgeon's cuffs," were born.

Because a true gentleman doesn't even take off his jacket when he's cutting
into dudes. 

          Since being a surgeon was such a prestigious title, many common folk started purchasing cuffed jackets to look educated and cool. Soon tailors started just slapping vestigial buttons on the sleeves of suits, even though they served no purpose other than looking like a 19th century surgeon. Which I'm sure everyone still aspires to.

"Stab wound? No problem! Look at my sleeves!"