The Wikipedia page you linked to disagrees with your assertion that almost every country in the world has it.
"In many countries – especially English-speaking countries such as Australia, Canada, Ireland, New Zealand, the United Kingdom, and the United States – there are no government-issued compulsory identity cards for all citizens."
"In many countries – especially English-speaking countries such as Australia, Canada, Ireland, New Zealand, the United Kingdom, and the United States – there are no government-issued compulsory identity cards for all citizens."