is the largest religion in India, with 80% of the population identifying themselves as Hindus, that accounts for 1.2 billion Hindus in India as of National Census of India, while 14.2% of the population follow Islam and the remaining 6% adhere to other religions (such as Christianity, Sikhism, Buddhism, Jainism, various indigenous ethnically-bound faiths, Atheism and Irreligion). The vast majority of Hindus in India belong to Shaivite and Vaishnavite denominations. India is one of the three countries in the world (Nepal and Mauritius being the other two) where Hinduism is the majority.
In response to the high rate of self authorised religious conversions by Hindus during the Muslim Mughal and Christian British rule, Hinduism in India and abroad (such as Fiji, Mauritius, Africa, Trinidad and Tobago, Guyana, and Suriname) underwent a series of reforms, the spearheading organisations being Brahmo Samaj, Arya Samaj. Religious leaders like Swami Vivekananda, Dayananda Saraswati, Ram Mohan Roy, Sri Aurobindo and political leaders like Gandhi called for reform and complete turnover of the social structuring. One example of such reform is when the Hindu body began in 1915. This led to a launch of the shuddhi and sangathan on a large scale in 1923.At this time, the Hindu population was the creation of urban, educated, middle-class leaders. Thus, the sense of religious caste and community identity was far more widespread than ever. The Shuddhi movement stated that anyone who was not Hindu was to convert, and through the Shuddhi movement came the Sangathan movement, a purity movement, which took action against those who were non-Hindu. As northern India was becoming more colonial, the British image of masculinity was projected throughout the different Indian communities. Hinduism was in between what it once was and what others were trying to transform it to be, the new Hindu image was intended to portray a man who could add strength to the community. The Shuddhi and Sangathan programs were launched in 1923 by Arya Samaj and the Hindu Mahasabha, and was intended to combat the growing Muslim population who were trying to remove the Hindus. There were many fights between the Hindus and Muslims as well as abuse toward the Hindu women. These are some of the drivers of the Hindu campaign to “reclaim the victims and protect the faithful” (Gupta). With this new system, the Muslims who were to be converted to Hindus would be put in the same caste system as before with no way of moving up, this caused a struggle between groups. This movement grew quickly for it emphasised the ideal of Hindu masculinity. Through this campaign, the Hindu people were feared and respected and no longer seen as cowardly or helpless. Shuddhi and Sangathan represented the idea that masculinity was restored, and Hinduism would thrive with Shuddhi practices and return power to the Hindu male. Although the Hindu males were gaining more power, they were also illustrating more negative male violence. In 1923, multiple Hindu-Muslim riots broke out to gain the province of India. After the riots broke out, Hindu organizations attained a new importance and conversions were then challenged in an organised manner. Tulsidas, Sant Kabeer Das, Raidas, Chaitanya Mahaprabhu etc. were pioneer of the bhakti movement for the social reformation.
India saw Muslim and later European rule; yet the country remains dominated by Hindus. This religion varies from Monotheism, Polytheism, Pantheism, Atheism and other tendencies, so considering another conception of God another form or avatar of the ultimate reality or creator is certainly possible.
Another reason could be like Buddhism, Hinduism is an ancient religion (the most ancient religion in the world, as a matter of fact) with well-established traditions that cut deeply into Indian daily life. Unlike indigenous American or African religions, which vary from tribe to tribe, these Indian religions spread across the vast entity that was the Indian subcontinent, generally accepted by a majority of Indian ethnic and tribal groups. Hindu civilisation had a long history on its own, with well developed scriptures and traditions. It would be much more difficult to convert members of a religion that was accredited with defining a civilisation than would be tribal peoples.