I have to agree with you on this, same where I am and it is a problem.
While at the same time making endless bother for ordinary citizens!My view is modest controls (ie metal detectors) will prevent most of the amateur terrorist attempts like airplane bombing or highjacking but are taken too far. The controls do little against well financed professional terrorists especially when they can easily switch targets to public places like malls, buses etc.
I do not think you can rely on that, but I think that more resources to police and intelligence should be the answer without any more laws. It is crimes, pure and simple, and calling it 'war' is just an excuse to, as you implement laws to give more poser to the government.The most effective precaution is intelligence from infiltrators.
In my view any proposed control that curtails civil liberties must present a sound legal argument in court that it would be of significant value and then should only be authorised for a limited period after which evidence must be presented as to its effectiveness if the control is to be continued.