Why wearables will replace your smartphone

The next iPhone won't have a headphone jack, if the leaks and rumors are true.
Some say: Good! The 3.5mm audio jack system is literally Victorian-era technology, a small version of the 6.35mm jack invented in 1878 for telephone operators. Removing the jack would make iPhones slimmer, simpler and more waterproof.
Others say: Bad! Killing the audio jack harms users, making decades of earbuds, headphones and other devices unusable without a klunky converter dongle. Plus, switching from analog head