Heads up, Creators: On Dec 13-14 you may see a noticeable decrease in your sub count as we remove spam subscriptions. If spam is removed, you'll see a YouTube Studio alert: https://goo.gl/qGDBvX This should help give you confidence that the subs you do have are real fans!
There's been at least three occasions where I had to re-sub to channels that I do watch regularly because I mysteriously unsubscribe from them. I don't understand why you're so intent on destroying your platform, team YouTube.