Raise Facebook's username change limit to once a year at least.

What is the point to appoint one username to a profile forever if this profile needs to go through ID certification and phone verification? Shouldn't this be a personal preference instead? I have searched on the internet and tens of thousands of people have the same issue. Some people's profiles are left blank without usernames after their trial to transfer usernames to their created pages. It's illogical to think that username transfer from profiles to pages is available and you can keep doing it by creating unlimited pages, but your own username can only be changed once then some people are left with a nameless profile.