To store application-specific data about users. The Supabase doc or examples show this. Where else would you put such data?

But what the docs don't cover is the provided Users table. Missing documentation is why I gave up on Supabase; and the Users table was one of the first problems I encountered. I could find no details on what to expect in each column at any given time.

Upon creating a new user, values get set in this table for no apparent reason. So if your application depends on knowing the verification status of a new user (for example), good luck... Supabase claimed every user was verified upon creation.