A few years ago we cancelled our visit to Israel where a lot of our relatives live because of the increase in lone wolf attacks in Jerusalem. None of my family are in Jerusalem and my relatives said it wasn't any more dangerous than usual, but we still cancelled. I regretted it so much, and went the next year when the threat was even greater (one example that didn't even get a mention in the news here was a Palestinian driving his car into a woman with a baby in a pram). People still lived their lives as normal over there and everyone seems content.
Am I scared of terrorist attacks? Yes of course, you would be naive not to be scared on some level. But the infinitesimal chance that an attack would happen here (and that myself or my loved ones would be involved in it) doesn't change my way of life.