Why are the Japanese car makers still using CVT transmission?

In the last 8 years the Japanese car makers have been using CVT transmission is most of their cars with the exception of Mazda and Suzuki. All the other Japanese brands such as Toyota, Honda, Nissan, subaru and Mitsubishi use the CVT transmission extensively in their model range. The most extreme being Subaru who actually used the CVT transmission for the new Subaru WRX. Unlike the Japanese, the Koreans and German car makers either did no adopt the CVT or abandoned it quickly after 1 generation of models.

CVT is suppose to be more fuel efficient than regular torque converter type automatics but it dulls down the driving experience to the point where the car is boring to drive. The simulated gear shifts programmed into the CVT transmission makes it feel like it is changing gears but the driving experience is still numb to say the least. Furthermore the transmission is unable to handle sudden increase in torque if the car's engine is modified.

I am wondering when the Japanese car makers will wake up and switch twin clutch gear boxes.