I don't know about Bhutan but street animals (mostly dogs & cats) is very common in Turkiye. From cultural point of view we see them as real residents of the place, we are taking up their land. So we are committed to treat them and feel responsible for their care as well. From a practical point of view, like other commentators suggested, they take care of the habitat - cats prevent rodents from going overpopulated etc. And they are cute and friendly and nice to have around!