Depends. Do you need a sturdy, durable, high-quality bag? Do you need a place to store all your belongings? Are you in need of an all-purpose kind of bag? Then yes, you do need a leather briefcase bag. They’re classic, they’re durable, they can make you look good in any place and any scenario and, once you buy one, you can rest assured that for years to come you won’t have to buy another bag.