I was living in London when 7/7 happened and was very stubborn about not letting 'terrorism win' and being scared. I also flew a few weeks post 9/11 with the same attitude. I also realise that the chances of being in the wrong place at the wrong time are still very slim.
However... I am due to go to London for a few days, then travel via Eurostar onto Belgium in mid December. DH works for a Belgian company so we are meeting him there then all travelling back together. However, my DS (3) and my 93 year old grandma (who's in bloody good nick for her age, but is hardly a spring chicken) will be with me. This has made me feel a lot more edgy about going, IF the worst happened we would be sitting ducks! Hiding would be harder, running would be unlikely (I can carry DS but not Grandma too!), DS would probably make noise / move and draw attention to us. Central London around Christmas may well be a target, as might the Eurostar and there appear to be links with Isis cells (or whatever the terminology) in Brussels which is where we are staying.
I'm getting annoyed with myself thinking like this, I'm not normally neurotic at all, so please snap me out of it!