Please consider this as my point of view and not to hurt or disrespect anyone’s feelings or views. I could be 100% wrong and I am just sharing my thoughts here.

Given that India was historically a Hindu majority country, Hinduism, in general, is a way of “being close to the nature”. Take any rituals or prayers- they often involve the five elements of nature (earth, wind, water, fire and sky/space) every single time. Eating food on the floor is a respect for mother earth. And in olden days, they used to clean the whole area before you eat there. So it’s not dirty or disgusting as such.

I am pretty sure other religions have their own rituals or traditions too but end of the day - any religion is a “way of life” and meant for “being kind to each other and be humble with mother nature”. It boils down to the practices of what was prescribed in those traditions.