Actually we train most methods of attack quite hard. I routinely prescribe twenty to fifty thousand full power strikes into a heavy bag if a student is having trouble hitting. He may spend six months getting it done, but at the end, after he has hit a heavy bag fifty thousand times, he knows damn well how to hit. It is the same for many things, however and I have also asked that a student sit and watch a daylilly blossom three times a week for several months to learn patience.
Training is as training does. If you want to develop speed, you must train fast. If you want to develop ki, you must train for it. If you want to be a good defensive martial artist, you must spend time defending yourself. No b.s., real time training. Full speed, full power, full contact.