I have a friend. He never wears an underwear. To justify this, he keeps saying nobody wears an undie these days. At first we protested, but now we just don't say anything. We just assumed he is trying to justify it to himself, or trying to force a trend that nobody would follow.
Sap dude's post reminded me of that friend. Sure cell phone replaced wrist watch for many teenagers, but an adult always wears one.