Should we stay or should we go?

Apparently the terror threat in Spain, specifically Barcelona and the Costa del Sol, is at a level 4 of 5.  High threat.  This is specifically aimed at foreigners, especially those going to tourist areas.  

Places with low terror threats right now include Mexico and Iceland.  The USA and Italy are actually rated at a 3, lower than Spain. 

Why is real life so complicated?  Do we make the bold move, knowing full well that we are heading into harm's way?  If something happens to my children here I could never forgive myself.  

Do we stay home, give up the dream, and lose the opportunity to give our kids this amazing once-in-a-lifetime experience?  What are the actual chances that something will not only happen in Barcelona but also affect them?

I read online tonight that there was an active shooter situation in San Diego at the Naval Hospital today.  Again, anything can happen.  Anywhere.  

This article gave me a lot to think about.