Benefits of a Second Passport

This is grossly disingenuous.

"Even if you have a US passport, chances are there are countries you can't go to, like Russia, like Brazil, like Venezuela..."

Those three are absolutely incorrect. Granted, all of those are a part of the group of 40 countries that require a visa prior to arrival, but getting a tourist or business visa is all that's required to go to those particular countries. Of those, Brazil's on the road to getting into the club of 172 countries and territories that either don't require a visa or grant one upon arrival for US citizens. The American passport is tied for second in the visa-free travel stakes, along with Finland and Sweden and one behind both Germany and the UK.

As a US citizen, are there countries where you can't enter on a business visa? Absolutely. Those countries are places like Iran (for now), North Korea, or Cuba (for now). Does that make you potentially vulnerable as a business traveler to political risks? Sure. But that's a risk you always run doing business across borders.

Something else you're glossing over-getting a second passport entails obligations in addition to the benefits, depending upon which one you've got. Like Singapore with military service. You're also vulnerable to political decisions made (presumably) without your involvement in their political process. Like everything, there's no free lunch.

I qualify for an Irish passport through citizenship by descent. But I decided it wasn't worth it for four reasons. First, European countries are really socialist. Second, European countries don't respect the basic human right to own firearms like the US. Third, if the Russkies start WW3, the nukes will hit Europe before they hit the US. And fourth, if it really goes bad in your home country, are you really going to be able to get a seat on a plane with so many other people trying to get out like you are?

Thanks for sharing. Second passport is a huge advantage. I will get it in future.

I wonder whether one can get a second passport + change ones name somewhere, that would look like sort of a more or less legal second identity