Correct. Would you drive your kids to school on a motorcycle? Most parents wouldn't. Same thing with small/big cars.
And again, you simply CAN'T remove all the big vehicles. The most dangerous vehicles are not SUV's or personal transportation, but commercial vehicles which need to be large to do their job. You can't remove them from traffic and you have to face the possibility of encountering one in an accident. The only thing YOU can do is choose the vehicle you might end up having an accident in.