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A: Because you want to be a rebel, obviously. Or, you know, you're just really bad at folding.
A: You don't. That's the point.
A: Only if you're trying to impress a postal inspector. Otherwise, you'll just be judged by the neighbors for being a slacker.
A: Only if you want to risk setting off the fire alarm and getting a nasty paper cut.
A: If you're going for a postmodern aesthetic.