Every Hindu practices are backed by scientific reasons. Similarly, there is a deep science behind the Hindu custom of eating food with their hands. Having food is a gift provided by the god and it should be done with the involvement of all the five senses to derive maximum benefit and pleasure from it.
The five senses are sight, smell, taste, sound and touch. Western food practices consider the first three of these senses but not the other two. It is must that food should look good, smell good and taste good but that’s not sufficient as this don’t make use of the other two senses of sound and touch.
If the hand is used to eat, we use all five fingers for this purpose. Similarly if eating food has to be a complete action, all the five senses should be taken into consideration. So according to Indian traditions, no meal is complete unless we serve something which produces a sound like crunching. The taste of food can’t be realized completely unless the sense of touch is used and the food is felt with our fingers. Human beings are provided with five fingers by god to use as spoons and generally children naturally use their fingers to put food into their mouth. Western parents forces the child to use spoon and it is contrary to the natural habit of using fingers to have food. Thus, the child uses an artificial aid to have food instead of naturally using the fingers given by the god.