I had citizenship of one most repressive and poor countries in the world - Uzbekistan. Later I obtained Russian citizenship. Now, I'm living in the Netherlands and plan to obtain citizenship of some first world country (NL, SG etc).
So I have first hand experience to live with Uzbek passport and being practically completely isolated from the first world (nobody give you EU tourist visa if you have Uzbek passport and you are not "special" person).
Now, I have Russian passport, it's a bit easier but I'm still struggling to get even tourist US visa (I was refused twice).
Changing passport is very long and painful process. It can significantly change your course of life (like in my case).
So I have first hand experience to live with Uzbek passport and being practically completely isolated from the first world (nobody give you EU tourist visa if you have Uzbek passport and you are not "special" person).
Now, I have Russian passport, it's a bit easier but I'm still struggling to get even tourist US visa (I was refused twice).
Changing passport is very long and painful process. It can significantly change your course of life (like in my case).