Brahma is one of the great Hindu trinity: Brahma the Creator, Vishnu the Preserver, and Shiva the Destroyer, who among them account for the great workings of cosmology.
When one looks at the glories of Nature, one realizes that Brahma must exist and have created this all for us. Or for bony fishes. Or bats. Or beetles. Or bacteria. Or for the inhabitants of some other planet.