Originally Posted by
jsfr
It takes at least one week to get a Russian visa (and often a lot longer), Same for Saudi and many others, are you suggesting that very frequent travellers (like most of us) stop travelling, for a week or more whilst we get a Visa? Not possible.
Originally Posted by jsfr
I suspect that terrorists don't fly directly out of Peshawar and Drug Smugglers directly from Medellin.
I agree - frequent trips are often a big issue when visas are needed and one only has one passport.
And, as you say, stamps are only a small part of travel history, which can be easy to "tweak" if necessary by the people
Doc Savage worries about. On the other hand, having a second passport for "normal" people (business travellers for example) can save a lot of hassle when going to incompatible or partially incompatible countries.