I use amethyst mostly, though I switch between coracle and primal on desktop. Also highlighter is great for the notes usecase, and there are several long form tools like habla.

Try different clients and some of the focused apps. It'll make clear the flexibility and probably get you looking at more docs about NIPs and such.

A proof of work scarce digital store of value that no one controls would be a winner take all game. There will not be other proof of works with significant portions of global use. It is inevitable that it would become a way to escape being unbanked, then mild inflation protection, then used in cross boarder settlement, then used for sovereign individuals to subject other actors to natural law in a digital space. Right now the transition from unbanked to being used for escape from just mild inflation is just starting.