Let's look at it this way. In cities, a soldier can hide in a window and destroy a tank with a rocket launcher-type weapon. On a wide open field a tank will destroy that same soldier. Thus, it is very difficult to compare such different things.
Regardless of new technologies the tank is a big asset. It not only aids in taking large hits but it is also an armoured way of convaence. It may not be used in wars but I think for civian situations where the army gets involved it will still play a huge role.