The reason why is to make more accounts for reddit, YouTube (one for entertainment and Portuguese content each) news sites where signing up is an alternative to pass a paywall and other sites with comment sections. ^{Bad euphemism bro.} Also some sense of "praxis" in order to gain privacy.

Edit: And also getting anxious at the idea of remembering all my passwords, and putting them in a note in my old phone, which I am not bringing into my new phone and want to use this to delete.

According to these two articles, I can save my old passwords I had before and maybe even still make new ones after, and put them in a folder behind one true (master) password, which is the one you will truly care about, and they will be saved in a way in which the managing company won't know your password?

There's also figuring out which provider to use (and probably a similar post for alt-mail providers.) This is overwhelmingly for mobile (Android). No real space constraints for apps, only price, because I'm not working age.