You must me thinking of what kind of a question I am asking to you. But believe me, we never tried to find out the answer of this question. We go to the temple to worship, yes of course, this is the only reason but it is believed that God is everywhere. If this so, then what is the need for us to go to the temple for worshipping God? It is very important to understand the genuine reason behind every belief.
According to Hinduism beliefs, temple is the most pure and divine place where an individual can directly connects their soul with God. Temple is place where a person goes to pray, to praise the lord, to give thanks, but most important to is to adore the God. Temple exists for the adoration of God. We have learnt that god is within us, and thus we are a temple which should remain divine and pure.
There are thousands of temples all over India in different size, shape and locations but not all of them are considered to be built the Vedic way. Generally, a temple should be located at a place where earths magnetic wave path passes through densely.
If we move towards science then we might get a reasonable answer for this question. Science has a reason for almost every belief. Scientifically, these temples are located strategically at a place where the positive energy is abundantly available from the magnetic and electric wave distributions of north/south pole thrust. The main idol is placed in the core center of the temple, known as Garbhagriha. In fact, the temple structure is built after the idol has been placed. This Garbhagriha is where earths magnetic waves are found to be maximum. There are some copper plates, inscribed with Vedic scripts, buried beneath the Main Idol. The copper plate absorbs earths magnetic waves and radiates it to the surroundings.
Thus a person regularly visiting a temple and walking clockwise around the main Idol receives the magnetic waves and his body absorbs it. This is a very slow process and a regular visit will let him absorb more of this positive energy. Scientifically, it is the positive energy that we all require to have a healthy life. The sweet ringing of the bells and chanting of prayers takes a worshipper into the world of salvation and divinity, and thus not letting his mind waver. When we go to the temple for Deepa Aradhna, and when doors (kapaat) open up, the positive energy gushes out into the persons who are there. The water that is sprinkled onto the assemblages passes on the energy to all.
The holy water which is used during ‘Abhisheka’ and Puja to bathe the Idol is not normal water. It is a mixture of Cardamom, Benzoin, zaffron / saffron, Tulsi (Holy Basil), Clove, etc. Doing Abhisheka by this holy water is to charge the water is distributed to the devotees who are present there as this water is a source of Magneto-therapy. Clove essence protects one from tooth decay, the saffron & Tulsi leaves protect one from cold and cough. Cardamom and Pachha Karpuram (benzoin), act as mouth fresheners.
It is proved that Theertham is a very good blood purifier, as it is highly energized. Hence it is given as a Prasad to the devotees.
The motive for giving a scientific proof for the adoration of the lord at
temples is just to know the real and deep meaning behind doing Puja or Archana.
Now, if anybody asks why you go to the temple? , you have an applicable reason
for this. And yes you must visit temple for your own sake and purity. All the rituals, all the practices are, in
reality, well researched, studied and scientifically backed thesis which form
the ways of nature to lead a good healthy life.