Motor destruction

A miserable and sad news was informed in some Web site this morning, about a B-Vectra X-18 motor, water pump destruction caused timing belt fracture leading to some valve stem distortion as usual.
X-18 including X-20 has good performance capability as it is, timing belt fracture is the most critical problem that exists beyond repairs.
To tell the truth, I have the same experience on X-20 motor with Opel B-Vectra sedan.
At the critical moment no amazing strange sounds were not discerned except the similar noise exactly with mechanical arm watch applied to the ear.

Then why timing belt should be brought on earth, such a critical destruction?

It happens when the movement stops that should be moved smooth enough and sudden and rapid weight be applied with exceeding the designed value.
Often the water pump impeller drive shaft supporting main bearing destruction because of dried grease packed.

NSK(Nippon Seiko, main bearing manufacturer in Japan) is warning on the grease impacted type bearing, at least 4 times a year the impacted grease should be cleaned and replaces in case of using under sever condition at the temperature over 80 degree.
Then such kind of maintenance is performed on the bearing fixed at the water pump portion actually?

The way to apply additional grease must be prepared if some replacement is not likely?
I'm going to make some holes on the water pump pooley for the lubrication needle insertion.