You're buying the bottle not the water. People buy bottled water for the same reason they buy cans of pop rather than 4 gallon jugs of coke that they can use to

You're buying the bottle not the water. People buy bottled water for the same reason they buy cans of pop rather than 4 gallon jugs of coke that they can use to refill smaller containers. It's so cheap that the convenience is worth it.