Let’s say I go out and about with just my iPhone — I use it as my ID, keys to my car, keys to my house, money, etc. What if I dropped my phone, it hit a rock, and then landed in a puddle? You’re just screwed, right?
@jsonbecker it's harder to accidentally break your keys, though. And you don't need to worry about battery life. Plus the items in a purse can be separated — like keeping some cash or a card in your pocket along with keys.