Hi Dam,
With the hectic way of life we have today we need something quicly that is why the "job of a dispatcher is more and more done by computers" as you said. However never forget that in aviation safety is first ... Computers are just quick but not intelligent so either it is in the cockpit or in flight dispatch office human beeing gives confidence. What's more ... You are the master of computers not the other way. A good FD must know also how to do manual flight plan and to find take off limitation manually ...
Bon courage!
