I used to feel this way too, but then was talking to family that was visiting from other parts of the world where no one they know owns a laptop or desktop computer, but everyone has a phone. For much of the next wave of computer users in rising countrues around the world, the phone is the first and only computing device that a person owns. They grew up on smaller screens and digital keyboards and have no care to move to what they consider a less convenient form factor. It really helped me better understand why some of these global messaging platforms are focused so much on phone based systems.