When a person hits that subscribe button they are saying, I want this person's content... not I want you @Youtube to decide what portion of content I get.... C'mon guys, to subscribe is an action, which means that sub is saying, give me this content
pic.twitter.com/ie8N97VQzF
I subscribe because I want to see the creators content and be notified of new videos. When I get notifications from any app that I get annoyed of, I change the settings.