Regarding raw diet

its good to eat some crunchy food for sure, but many fruits have this, most notably apples. Also, the main reason we need to floss or eat things like carrots to scrub our teeth is due to the high grain and refined sugar diet which are the two culprits of tooth decay. 

The reason I bring up hard veggies is because many people have damaged intestines and or weak digestion and if they eat to many hard veggies they have problems, so if they make those a huge part of the diet they will curse raw food.