I wouldn't call Hinduism a religion. It's more like our way of living.
Over time, we've made it sound like a religion. It's more of an umbrella term for different practices, traditions practiced across the Indian subcontinent. And i think the rest is built into it, and is labelled so. And we go along with all of that.
Maybe i would want to see a 'no religion' option along with the others at places which ask for one's religion.