I know this is a meme, but security is not binary. It is not you either have 100% or 0%, it is always a sliding scale, and usually on the opposite side is convenience.
Encrypting your drive protects against someone stealing your computer or breaning into youe house while the computer is off/locked.
People like to trash people that write down their passwords on a post-it note and keep next to their computer. It is not ideal, but having a somewhat complex password written down protects a lot more against attacks over the internet than having “password”. However, if others have physical access to the note then it is obviously very bad. Like for example in an office.













Yes. Writting down a complex password helps against most attacks, except one where the bad guy has physical access to your note. Based on the normal users use case that is probably a very good trade off. Most hacks are done over the internet without access to your note.
Ideally everyone should use a password manager, but that is highly unlikely any time soon.