That seems rather odd to me. I can believe it was a final straw after other reasons like running out of content you particularly want (absolutely or in comparison with other services), but not it begin "the" reason.
I don't particularly pay attention to the recommendations on either Netflix or Amazon, instead picking up things I might like to try from external sources (friends & family, discussions or records in various media, having liked something or some part of it looking into what else the performers/writers/directors/other have done it are involved in now, sometimes the does own external advertising).
I feel that the recommendation systems are more optimised for people who use TV/movies as background noise rather than actively watching. That would explain re-recommending long running series that they have already watched, amongst other things people have mentioned in this discussion.
Maybe my behaviour is a vestige from the life of piracy back when content was less readily available otherwise (somehow region locked, or simply not available on local channels yet, etc, so I often couldn't get things I cared about more legitimately for many months, if ever, and back in the scheduled TV days things were often in at inconvenient times). I seek out what I want rather than waiting for it to be handed to me by the service(s).
