Why?

I am curious about the main reason people left Iskcon. Is it the philosophy that failed them or the institution or something else. I was only in Iskcon for a year in 1970 and I left because it failed to answer some of my questions. Then moved onto other paths. I occasionally watch a Vaishnava speaker on you tube to see how it's going, there are one or two , not in Iskcon more line wolves who seem interesting, particularly Swami Padmanabha and his radical personalism ideas. It's not enough to draw me in but he is quite listenable.