I think there's an important difference between religion and spirituality. I personally take issue with most forms of organised religion, but to me the cults are those that are harmful to those who join and their loved ones. Society as a whole needs to reject them and any group using indoctrination is to be avoided at all costs in my view.
It's often those that shout the loudest who often have the most to hide.
I think many people are drawn to those who proclaim they, and only them, have the answers whether it be the Christian church or your run-of-the-mill cult because it's easier.