Originally Posted by dminor
Why are pneumatic tires better than solid rubber ones? Why are disc brakes better than coaster brakes? Because we are living in the 21st century now

Define Better???? Is more expensive better?? Depends on the application.
For relatively smooth singletrack, a full suspension bicycle is not required. Even for choppier stuff a full suspension is not required. What is typically required is more riding skill.
For rough as hell downhills, full suspension is typcially required. Horses for courses.