I think you a word. Since stevoski has not answered: from his SO profile he is 40.
I started travelling a lot 5 or 6 years ago and have been to ~21 countries so far, and I don't travel every year. You could do 90 countries in say, six backpacking trips, each one to three months long. Doable in 3 years if you can keep it up. (that's barely getting to know each country, but still)
You should an reddit AMA.