Always had a cheap desktop computer and never thought a phone was worth it. Is there a reason people like me should reconsider?
Well, if you think that a cheap desktop computer is enough, think of phones as a portable desktop in your pockets powered by a battery.
Plus, with the right combination of applications (more preferably, a few, and some with no active internet permission at all) and power settings tweaked both for better battery mileage and longer, more focused on-the-go sessions (e.g. editing documents, playing that one dungeon crawler roguelike, and planning important events, etc.) you could count on it more.