When has that complicated anything? Being a dual citizen is a huge benefit everywhere on Earth. For anyone with enough resources and time I'd encourage collecting citizenships like they were Pokemon.

Because usually you are treated as being a citizen of the country whose passport you are travelling on. If you flew to China and were arrested of a crime, you are much better off having used your US passport than the Malta passport you purchased, or worse, the Sudanese passport you bribed an official for.

> Because usually you are treated as being a citizen of the country whose passport you are travelling on.

By your host country maybe (though I don't agree it's as cut-and-dry as that), but your home country will still treat you as a citizen regardless of your other citizenship statuses (except in the case you are a citizen of your host country). So they should still give you the same aid they'd give any other citizen -- and in some cases the UK has actually helped UK citizens flee a country even though they are a citizen of said country (examples include forced marriages of dual Iran/UK citizens in Iran).

But it's not much use if your other passport is Chinese.

> For anyone with enough resources and time I'd encourage collecting citizenships like they were Pokemon.

Care to elaborate? What kind of benefits one could get out of it? There's tons of information on topic from biased sources like law firms, but very little otherwise.

Except in most countries you can't have more than 2 or 3 official nationalities

Wrong.

In many countries you can't have two. But as long as "dual citizenship" is recognized, there is no upper limit.

Well, technically any country that accepts a doubly nationality accepts a plurality - you simply don't inform all the other countries of your other nationalities.

Be careful about picking up a citizenship in a country with conscription.