Geez, you sound like you're living in a war zone... There are way more people that die from accidents or diseases than terrorism. Do you worry that every day they will come home in one piece because of traffic? Way more kids get injured playing on a swing than being killed by bombs so maybe you shouldn't take them to the playground at all.
There is no immediate solution to terrorism and wars, bad stuff can and will continue to happen every day for the rest of time. That's the nature of being human with all our failings and weaknesses. The day you eradicate terrorism, you'll be able to eradicate corruptness, envy, greed for money and power, hate, religion, poverty etc...
Terrorism, disease, accidents are random acts. If you're in the wrong place at the wrong time, it'll happen so why worry about it... You act sensibly and live your life and see what happens, not much else to do really.
I've traveled to many places that are considered risky(central-south america, africa, middle east) I don't worry about it... I'm not going to live my life hiding under a bed and be miserable because something might happen... What's the point? I could cross the street and be hit by a runaway bus tomorrow or a bomb might explode or maybe I get cancer... What's the difference? I'll take the bomb or the bus for 100, I hate the idea of cancer and watching yourself become nothing over a period of time.