Hey Zen I am God, know me
Back to making my point. Hinduism is more a way of life than a religion. There is so much about this religion no one man/woman can say they have grasped all of it. As long as there are Indians(who call themselves Hindus) or anyone who does not object to being tagged Hindu, Hinduism will be there.
One can never be converted to a Hindu, all are one. They just identify themselves as something else. Your humanity makes you a Hindu, if you take bath everyday, it makes you a hindu, if you pray to God, any God it makes you a Hindu. This is the way of life for a Hindu and anyone who just lives that way is an Hindu at some level.
Hinduism says that all truths are the truth so logically if you believe in the truth that Jesus or Allah is, you are being a Hindu. And you believe that there exist no God and that is your truth, then you are an Hindu too.