Personal Pronouns? Don't. You Sound Stupid and Self-obsessed

Don't "declare personal pronouns." It makes you sound stupid and self-obsessed.

I don't ask you to cater to my weirdnesses and personal eccentricities. Don't try to impose that on me, or anyone else. That's common courtesy 101.

I mean, good heavens! It's difficult enough keeping proper track of names and faces, let alone catering to YOUR demand that I twist my language all around for you!

So, no, I won't do it. And 99.9% of all people you meet outside your friend group are all thinking exactly the same as I am... regardless of whether they tell you.