Perhaps because you need to be more aware that they're all driven by people, with whom it's generally possible to interact on a person-to-person basis rather than bike-to-motor vehicle basis?
The thread that Balki links to obviously contains a lot of discussion on this (as do various others). The advice to do cycle training is not to blame you or to pretend that motorisation is harmless, but to help you enjoy your riding more. Cycle training is highly recommended for any rider of any level of experience.
Perhaps because you need to be more aware that they're all driven by people, with whom it's generally possible to interact on a person-to-person basis rather than bike-to-motor vehicle basis?
The thread that Balki links to obviously contains a lot of discussion on this (as do various others). The advice to do cycle training is not to blame you or to pretend that motorisation is harmless, but to help you enjoy your riding more. Cycle training is highly recommended for any rider of any level of experience.