Is a selfie display picture really worth it?

I don't think it has to be a selfie, but I think it should represent your personality.

People need to know that I really am country music superstar Carrie Underwood

A selfie is just a picture.I like my profile pic cause it's artistic and pretty.People could like their face and find themselves pretty enough that they want to use it as a profile pic.Nothing wrong with feeling good about a picture you took of yourself, I doubt they feel good about themselves 24/7 anyways.
A profile pic is also defining since its the first thing people see besides my username.So I don't see why someone cant use their face :)
Its of them, makes them recognisable too.Works the same as any other profile picture.

Not really.. We know who we are and don't require validation

Who are you talking to and why are you bothering me with this?

Did we???

we don't care if you do it or not... but if you do post it some might care.

No