Hi Sharon,
I email my list every day and an average of less than 1% unsubscribe.
Even yesterday, when I sent what I thought was my best ever motivation/teaching email I got a couple of unsubscribers.
I think that we are trying to do exactly what you are doing – sending out awesome content – it is not possible for it to connect or resonate with 100% of the people on your list.
The upside of unsubscribers is that you are left with more of the people who ‘get’ you and look forward to your emails.