I love Olympics, but I wouldn't go. Begin with terrorist threats, then Russian security measures - keep in mind "politeness" and manners of Russian police, the security measures will make this visit a hell. And then I had chance to get known how the Olympic stadiums were built. There is a high probability that some stadium would just ruin if there are crowd of people in it.
So, we have two big risks (terrorists and breakdown) and one thing is bound to happen (rudeness of security). All these are not very encouraging.