[charlesmchen]

Your data is missing a "physical security" dimension. I don't think Medellin would be in your top 20 if this was taken into account. It wouldn't have to be a kidnapping or mugging - just having your laptop robbed would be disastrous for a nomad.

[digisign]

I've been to Medellin and never felt unsafe, it's mostly unsafe out in the jungle.

[wyager]

Why would it be so bad if you were properly backed up?

[sushimako]

Restoring your work-environment after a stolen laptop can be quite a time and money consuming hassle in south america. Buying electronics online and getting them shipped is hardly ever a reliable option, local electronic stores might not have the hardware you'd prefer and slow internet connections give you a hard time waiting for those gigabytes of backup to load.

Medellin is (i think; never been there) a rather modern city, so it might be a bit easier. Still, charlesmchen's concern is valid for most south-/cental-american listings.