I see varying degrees of deity "devotion" in Hinduism within the structure of the Vedas. The samhitas and brahmanas provide rituals and a mythos to illustrate use of the principles behind them. The aranyakas provide some specific concerns for later in life and the upanishads allow for ishta devata or even advaita where we and god are one as brahmin.
- What percentage of all Hindus believe that the gods are merely mythical in nature?