@camlok,
I've lived for 81 years now, and have never found any situation where I felt a need to kill another human. I've visited many countries (over 80), and never felt fear for my health or well being.
As a matter of fact, I visited Israel after their war (2006?), and my family and friends thought I was crazy. I also visited Egypt on the following month when German tourists were killed at Hapshepsut Temple. The place was empty of tourists, and our small group had the whole place to ourselves.
I take the normal precautions, because I often travel solo, but many couples often invite me to join them for tours or meals.