1. It’s unsafe.
Safety always comes up as an issue when foreigners think about paying Colombia a visit; and while the country does have a past full of instances of civil war and violence, I don’t see that as reason to stay away. Colombia is taking its bit of the tourism pie, and with that comes money, infrastructure, and development. Just take a look at Medellin to see how far one city has come from a dangerous pit of unrest to a tourism capital.