Vishnu was a minor deity in the Rig Veda but majority of the Hindus blindly worship him as the supreme God. Rudra who was an another minor deity in the Rig Veda transformed into Shiva of modern Hinduism. The Vedic religion strictly followed hard polytheism worshipping all the Vishvadevas as a collective whole while modern Hindus rely heavily on the Upanishads and have an idealistic outlook towards their world. There was no idolatry in the Vedic religion while modern Hinduism due to existence of the Agamas is too imbibed in idol worship ignoring the existence of the Vedic gods. Mitra, Varuna, Agni, Soma, Indra, Yama, Aruna, Usha, Rudra, Ashwin, Pushan, Savitr, Aditi and other Vedic gods are replaced by Hanuman, Ganesha, Kali, Rama, Krishna, Subramanya and other Hindu gods. There was no Sanyas for women in the Vedic period but many Hindus today openly give Sanyas for women which was forbidden by the Vedic rishis. Vedic rituals were considered very seriously and offering to the gods were made daily. These rituals were very intellectual rather than the superstition that we see in modern Hinduism. Modern Hinduism gives too much emphasis on the Upanishads ignoring the fact that without the Vedas there can be no Upanishads. The Vedic rishis considered the world to be real but Shankara who was a crypto-Buddhist corrupted the Vedas and introduced the doctrine of Mayavada or Illusionism which was a Buddhist doctrine into modern Hinduism.