Me, myself and i

Why do we capitalize the word "I"?

There’s no grammatical reason for doing so, and oddly enough, the majuscule “I” appears only in English.

Consider other languages: some, like Hebrew, Arabic and Devanagari-Hindi, have no capitalized letters, and others, like Japanese, make it possible to drop pronouns altogether. The supposedly snobbish French leave all personal pronouns in the unassuming lowercase, and Germans respectfully capitalize the formal form of “you” and even, occasionally, the informal form of “you,” but would never capitalize “I.” Yet in English, the solitary “I” towers above “he,” “she,” “it” and the royal “we.” Even a gathering that includes God might not be addressed with a capitalized “you.”

Fascinating. For nearly two decades now, my person writings have utilized an uncapitalized "i".