With all due respect, you sound quite naive as to the requirements for passport issuance. Governments don't just hand out passports to non-nationals just for the hell of it, orr because they ask really nicely, or because they're American.

Almost every country's process of acquiring citizenship (unless it has been conferred by an ancestor, and even it is is rather restrictive in most cases) is long and expensive.

If you're worried about being at a disadvantage in a hostage situation, just remember that there are tens of millions of US nationals overseas at this exact minute in virtually every country in the world, and your chances of being singled out because you are a US citizen are literally infinitesimal.

Relax and enjoy your trip.