Memorization, as a learning technique, does not work very well. We frequently ignore the knowledge we memorize in classes, relying instead on the knowledge we picked up in passing. When students learn, they are often not encouraged to try out the new knowledge on problems they face or relate that knowledge to what they already know. So, the schoolbook learning forms isolated islands of structures in their memories. They know how to apply these islands to the schoolbook problems they face because that is the context in which they learned it.
Memorization has another problem.
It's just not fun. Let's take an example. Israeli officials, some of whom had hailed the visit as a portent of peace, were surprised and outraged by the remarks, made at a news conference. The strange collapse of an already strange pilgrimage quickly dampened speculation that the trip might promote ties with Libya after years of unbending hostility. The pilgrims announced that they would depart on Wednesday, a day ahead of schedule, canceling planned visits to several Israeli cities.