I have a genuine question to hindu members. What is the thought process behind building new temples. I understand that you think ayodhya needs a temple because it's the birthplace of Ram i.e. historical and religious significance. What's the rationale behind building new temples especially overseas. I understand you need places to worship but is congregation a big part of it. What determines what god the temple will be dedicated to, Which god will be worshiped. I see some hindus always talking about Ram, some are always talking about Shiva. Is this personal preference of different schools of thought?
If you are wondering about muslims, we don't have to have a reason to build a mosque or dedicate it to anyone. We do name it after notable figures but it doesn't matter who. The sole reason is to have a place to congregate as that's a big thing in Islam. But, there is nothing like "we dedicate this to someone so and so and this will bring blessing upon the community". Again, idk if that's the thought process behind it. So this is a genuine question.
@Paitoo , sir?
Big temples of the sort you see outside India are built mainly by 2 organizations - ISKCON and Swaminarayan Trust. The latter is a Gujarat based organization and has more Dharmic leanings than Hindu leanings. Their temples are not dedicated to Hindu gods as such. However majority of the visitors are Hindus, though I have seen Sikhs and Buddhists also visiting. Due to their Gujarati origins it is possible that overseas Gujarati Hindus throng the temples abroad. Since Gujaratis are also a wealthy community, they are able to partly fund construction of these temples too.
ISKCON is dedicated to Krishna and is heavily oriented towards spirituality than ritual or theology, hence the large number of gora or hippie type followers too. Their origins lie in Bengal, though I won't call them influenced by the Bengali way of life. ISKCON has a very popular temple in Mumbai, which is also thronged by Gujaratis, and this is another reason why you will find ISKCON temples wherever Gujarati disapora is large.
The recent growth in Hindu temples in Middle East is driven mainly by Modi's diplomacy in the gulf states. Modi himself is a Gujarati and quite endeared with both the above organizations, who also have the finances to build large temples, so it is natural that more ISKCON and Swaminarayan temples get built abroad.
Hindus do require places to congregate, but the motives are different. Location is important for Hindus, more than the structure. Hindu practices are intertwined with ethnic history and there is always a holy place or sanctum for most families where their ancestors worshipped or some important event is supposed to have taken place.
While steadfast Hindus may identify as Vishnu, Shiva, Kali, Durga worshippers etc, they are never choosy about visiting a temple. If the only temple available in the vicinity is a Shiva temple, a Vishnu worshipper will visit it. The boundaries are not at all sacred in that sense. An overwhelming majority of Hindus do not explicitly identify as worshipper of one deity over the other.
Finally, who determines the temple will be dedicated to which God? Simple, the people who are funding it. A Tamil community may dedicate it to Murugan, Malayalis to Ayappa, Bengalis to Durga and so on.