On this thread, I see so many questions about people asking about the need for a passport when cruising to various destinations.

My question is in this day in age, why doesn't everybody have a passport? I mean the US requires foreign visitors to have one when coming to the US, so why is it so hard to understand that US citizens should have one when traveling abroad? And why do people chance it in going to a foreign country without a passport?

Opinions?
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LuckyZ

Carnival 11 times (12th booked for June 2018)
Princess 3 times was awesome
Big Red Boat 1 time too many