- You don't need to buy a handbag.
- You don't need to worry about the shoulder/back pain which can be caused later in life due to long term bag carrying.
- You don't need to worry about styling said handbag with your outfit (thereby actually having to have multiple handbags).
- You don't have to display your personal stuff to a bouncer just to get into a gig.
- Increase your hand baggage allowance.
- Easier to run for the bus.
- Less easy to have your stuff stolen on the underground.
- Hands in pockets is a really comfortable way to stand.
- Go for a run without one of those uncomfortable phone pouches stuck to your arm.
- Men have them on their clothes!