What's the point?

So I was in Kolkata recently for a cousin's wedding, the day after the terrorist attacks in Mumbai. I hate going to such events now, because the focus inevitably shifts from the marriage which we've there for to my wedding plans, which are non-existent as of now. Anyway, lets not diverge from the intent of this post.

So, I was in Kolkata and everyone around was telling me that Mumbai had become a very dangerous place to live in, given all the attacks that have happened here over the last couple of years. Well, I asked them which place was safe! Not like other cities / towns in India had not been attacked, in fact even smaller cities were not being spared. Pat came the reply, "Kolkata is safe, this place has not been attacked!" (and this was not from one person in one discussion but several different people with whom I was having this conversation at different times).

True, so a city like Kolkata has not been attacked, which begs the question, why? Well, to me the answer is simple: planning and executing a terrorist attack would require months of work and lots of money and thus an attack would be most desirable where it causes some disruption in people's daily activities, even better if it affects the economy of the city / region. So then why would someone attack a sleepy place like Kolkata, where economic activity is negligible (except for people having tea and jhal-moori at roadside stalls) and enough disruptions are created by the local leadership (read: 'Didi') themselves? What's the point?!

I think this fact is understood by the local authorities, which is why I saw no real increase in security at the Kolkata airport when I was coming back a few days later.