Uppercase for I...ever reasoned?

Why is the word ‘I’ always capitalised?

I understand that English is the only language where the pronoun ‘I’ is always written in the upper case; in most other languages spoken in Europe, it is written in the lower case. I guess this goes to show that the English have a big ego! Just kidding! The only explanation that scholars have for this is that when the Old English ‘ich’, meaning ‘I’, was reduced to ‘i’, it was thought to be too small to be considered a real word. Also, printers and scribes were worried that ‘i’, when written separately, would get attached to the word before or after it. Since they didn’t want this to happen, they began to capitalise the word.