Common arguments for carrying a purse / bag:
- It's useful - you can carry all your stuff with you without having to sit on it
- It can be stylish
- It can be a status symbol
- It's not manly. (See informative beer commercial below)
See! Beer is manly! Purses are not! Why, you ask? Because! Purses sometimes have fringes, or rhinestones, or are made of fancy faux leather - inherently feminine stuff! But wait...