I think that you'd probably do well in a consulting role where you are helping companies who want to improve in the area of creating passionate users (products and websites). Your knowledge of the field is shown well by your blogging, and maybe getting out in front of people will give you more of a reason to stay passionate about this subject area (if not the blog itself).
I like the idea of a private blog if getting the RSS and reading posts was as simple as public. If there are too many hoops just to get notice of and read a single post it will get frustrating.
I do hesitate to run with the other commenters that say you should monetize this, but you should make it at least a part-time passion where you are getting to stretch out on the things you write about, and then allow experiences to craft other posts.
I do think that by working in a team, it will make it easier for you. The passion moves away from you and to the team of writers, the hate will move with it. Being a part of a groupblog would be a good solution.
Use your passion and geek expertise to liberate the latent creativity that resides in readers, something that works better than the linear, sequential and fast fading stream of comments (yeah, this is recursive). Comments are writing, but lets have something not as we know it. Writing in this box just feel a little klunky, there must be a better way, make a better blog
I hate to see us lose your input but I wonder if simply publishing articles with no comments enabled and having a members-only forum wouldn't be a good compromise. There's something about the immediacy of the response form and the lack of accountability available from anonymity (oh, hypocritical me) that seems to encourage people's awfulness.
It’s entirely possible that I copied that individual number across incorrectly (and that the index was correct), but when I did the query just then it returned a Technorati Rank of 37, so as you say there would be no change in the rank, but an improvement in your index.
Honestly said, I don't think you can do anything to fend off the attacks. I don't think you got attacked because of something you did, but because lots of people admire you and your work. That's apparently enough for some people to hate you. Only by unpassionating your readers, can you hope to actually stop the haters. I hope you will reject that option.