iOS Notes should be enough for anyone, but I hate that you can't link between notes in any reasonable way (sharing the note to myself sucks and forcing the system to give you the note id and creating your own internal notes link is tedious).

I basically use iOS Notes as a dumping ground and then occasionally clean it out like an Inbox. Mostly deleting things, but sometimes moving it into my Obsidian vault.

In theory Drafts is even better for this because it supports Markdown and is designed to be a dumping ground and rapid processing of the notes.