In reply to:

And, Ryan, I was not being sarcastic or insincere about the "period" part of my sentence. I was making an honest attempt to be helpful. I simply meant that there is only one grammatically correct first person singular pronoun that I can use to replace my own name in a sentence and that pronoun is "I" (standard English).

I was being a little sarcastic about "Period"s. But the sarcasm was directed at the English language:

What we have here, apparently, are these rules:

- Pronouns are used in place of nouns.
- First person is when the author refers to the author
- All pronouns can be re-replaced with the noun they replaced, except the grump of a pronoun, "I"

Which of those rules seems inelegant to you?

Eventually I'll learn to accept the chaos of the English language, but every now and then I forget.