On Countries visited so far...and in the future

Ok so with a count++ on the list of countries I've been to accomplished as a result of shifting base from Cotonou to Ouagadougou, let me enumerate the countries I've visited so far. For sake of clarity let us exclude airports transitted and stick to thos countries where I've atleast:
1) Stayed a night at a hotel/ friends place
2) Spoken to atleast 10 locals and interacted meaningfully with at least 3 locals to get their views on what works and does not in their country
3) Had a meal at a restaurant
4) Done business/ had professional interaction
5) Done something fun

So Kenya is out of my discussion on counts #1&4 .

The countries that qualify as visited :
India, Singapore, Indonesia, Benin, Togo, Ghana, Nigeria and latest addition to the list : Burkina Faso

The counties I hope to add soon to the list:
Am hoping to add Niger (probability- 1) &amp [ Update : Already visited Niger!!] ; Cote d'ivoire( probability - 0.9)and to lower probabilities Chad & Cameroon to this list pretty soon. On my wish list but with undefined probabilities in order of wishfulness are - China, Brazil, Russia, South Africa, Japan,USA / Canada, UK, Malaysia , Thailand, New Zealand, Australia, Germany, Italy, Greece, Turkey, Iran, Algeria,France, Italy, Argentina, Cuba, Mexico, Ethiopia, Algeria, Denmark, Netherlands and Korea rounding this list to a nice round figure of 40.

Now would be thrilled if this list was attained by the age of 35 but will settle for 40 as well .

More on what I've seen and why these countries in particular on demand ( just leave a comment) , time permitting...