The use of lower-case i in the middle of sentences is a deliberate linguistic choice, reflecting a belief that “i” am the same as any other, no more or less important than “you” or “she” or “they.” 

English is the only language that capitalizes the first-person and no other pronouns, a linguistic convention that tends to reinforce unfortunate ego tendencies—is it any wonder that English-speaking peoples are more individualistic than others?