I wondered if in this age of the internet, email, social media, not to mention of increased internationalization and possibly terrorism as well, countries could still justify maintaining actual physical embassies abroad:
(1) It may seem just wrong to let your country's diplomatic officials to be exposed to undue risks such as being injured, taken hostage or even killed all because the government may want or need an embassy in a particularly "dicey" country.
(2) If it is the case that part of an embassy's mandate is to "look out" for their nationals who are abroad in the country in which the embassy is accredited, in the case of "those countries" that were particularly repressive and where "human rights" is a rather "foreign" concept, it may seem just wrong that any so called "internationals" could call upon their country's embassy for assistance while the "nationals" may not have anyone in their corner to intercede on their behalf. It may be "just me" but in a way I think that if anyone was planning to travel anywhere, it should be a case of "you pay your money and you take your chances" and as for the particularly repressive countries, people should treat them like fairly controversial topics and "not even go there."
(3) Embassies may also take money and resources that could also go to other worthwhile causes such as domestic poverty, people born with different physical and other "challenges," the elderly, students, and even the poor in "emerging" read: "developing" countries.
It is interesting to hear everyone's take on this matter.