Why do most people and countries put their money in Swiss banks?

Answer 1

Safe country, stable democracy, really professional banking services, banking confidentiality (except with major fraud) - and of course, there are excellent transport connections from/to Switzerland plus many languages are spoken in Switerland (most bankers can speak English as well).

Answer 2

Not sure that is actually accurate. But if you want to know why Swiss banks are so popular, it's several factors, but mostly because it's a stable, neutral country so your money is as safe as it can be relative to many countries. As recent as the 70's it was a great place to hide money because Swiss banking laws favored privacy & discreteness above everything else (although it's not as mysterious working with Swiss banks anymore as they report suspicious activity to internatioal authorities like everybody else).