i love I have a central place i can put everything I need to reference or remember and have it backed up to Git for version control and all the connections between documents relate to each other the way they do in my head.
What I hate is the phone app not letting me have a default template or template select on news document. I also wish it was open source but I won't fault them for that. I also hate that the git plug in doesn't work on mobile so I have to do a sync and commit from my server vs committing directly.