What is the use of arguing with religious believers? They think what they believe as the ultimate truth.+

You are being conditioned by the religious myth which has made you a non-thinker. 

The PURANAS, including Vishnu Purana and Siva Puranas, are based on a false idea of personal God because the writers have thought of Him as a glorified man and woman.

The translations made till now of Indian philosophical works have represented religion and mythology, not philosophy. The greatest pundits do not understand it, for they do not understand science. What has this mythological teaching done for India? Look at its state today. Look at the conversions. Imagining that God has ashes on his forehead or blazing like the sun-- that is all poetry and depends only on faith.

The Saiva Siddhanta sect is a dualistic, unphilosophical religion like Ramanuja's sect.

Why did not Ramanuja and Madhva write commentaries on the Upanishads (as Sankara did to establish Brahman) but stop, content with writing a commentary on Vysa Sutras, and culling some paras only from the Upanishads with convenient vagueness to establish their God and Theology?

Indians are more religious than other people. The six systems of Indian Philosophy are really six systems of Indian speculation. For there is only one Truth.

The ancient Hindu tenet borrowed by theosophists of the universe appearing and dissolving, days and nights of Brahma, entering into pralaya, etc. is intended for mediocre intellects who cannot rise to the truth. It is a convenient fable representing the philosophic truth that the whole universe dissolves in your mind in deep sleep, thus entering pralaya, and rises again the next morning, i.e. it is all imagination, idea. The Brahma-God has nothing to do with it.

That is why Swami Vivekananda said:- The masses in India cry to sixty million gods and still die like dogs. Where are these gods? ... The gods come to help you when you have succeeded. So what is the use? Die game. ... This bending the knee to superstitions, this selling yourself to your own mind does not befit you, my soul. You are infinite, deathless, birthless. Because you are the infinite spirit, it does not befit you to be a slave. ... Arise! Awake! Stand up and fight! Die if you must. There is none to help you. You are the entire world. Who can help you? - Swami Vivekananda (Delivered In San Francisco, on May 28, 1900) The Complete Works of Swami Vivekananda/Volume 1/Lectures And Discourses/The Gita II

The believer and his belief and the world in which he exists are merely an illusion created out of God. God alone is real and the world in which the believer exists is merely an illusion. Until the believers think God is separate from him, he is bound to remain in ignorance of God.

What is the use of arguing with religious believers? They think what they believe is the ultimate truth.

To argue with a person who has renounced the use of reason is like injecting medicine into a corpse.

Those who indulge in a perverted argument on their own standpoint and opinion are not seeking the truth, which is beyond form, time, and space. They just want to exhibit their accumulated knowledge accumulated from here and there. They think what they know is the ultimate truth.

They think whatever they propagate is the ultimate truth. The question never occurs to them, “Is what I know is really the truth?

That is why Jesus said: ~ “ Do not throw your pearls before pigs, lest they trample them underfoot and turn to attack you. (Matthew -7:6)

~ He meant Self-knowledge or Brahma Gnana (pearls) should not be given to the ignorant populace (pigs).

Spirituality is nothing to do with religion. Spirituality is based on the Spirit, the real God whereas religion is based on the false self within the false experience.

Yajurveda – chapter- 32:~ God is the Supreme Spirit.

Vedas and Upanishad confirm the Soul, the Self, is present in the form of the Spirit or consciousness.

If God is Spirit, then how does the man know God created the world? There is no proof. If the man had seen God creating the world, he could admit it, but how could he have seen God before he came into existence? (i.e. were created).

The Spirit is the root element of the universe. The Spirit is present in the form of the Soul, the innermost Self. The Soul is present in the form of consciousness. From the Spirit, the universe comes into existence. In the Spirit, the universe resides. And into the Spirit, the universe is dissolved. The Spirit is the parent of all that is there is.

Bible says: ~ “God is a Spirit, and they that worship God must worship God in spirit and in truth (John 4:24)”,

God is not physical. God is the Spirit. God is the Soul, the Self. God is birthless and deathless because God is a formless, timeless, and spaceless existence.

The birth, life, and death happen within the illusory world, which is created out of God, which is present in the form of the Spirit. Spirit means the Soul, which is present in the form of consciousness. : ~Santthosh Kumaar