I think the main problem is that we have our heads contaminated by too much "news". We live in constant fear, even when statistically we are less violent than ever.

For instance, terrorism works when its actions are published for the more people to see as possible. Statistically you have more probabilities of chocking to death on your breakfast or slipping in the shower than dying from a terrorist action in Europe/US.

Rational thought is on the backseat... So hence the pessimism and thoughts that something bad is comming.

Please take a look at this: https://www.theguardian.com/media/2013/apr/12/news-is-bad-ro...