I agree, I don't think that the technology is going anywhere, as it's pretty much saturated with support on almost every blog / publishing platform, etc. I think that the idea of an 'RSS Reader' is dying might hold more weight, as there are a number of issues with RSS that nobody is really working to tackle (that I know of -- I personally am, but that's another conversation.)
You may consider switching to Google Reader in the interim, as I don't think it's going anywhere.
Which features ("bits"), btw?
One area I'm hoping to improve on both is the speed - both Bloglines and Google Reader, on the Blackberry at least, are a bit cumbersome and need several clicks before you actually get to read anything. Another thing I'd like to do better is that (with Bloglines) a failed page load still marks all new articles as 'read' - this does happen occasionally when I'm on the move, and I end up missing the latest articles.
I have one or two other ideas to experiment with :-)
I find an aggregated set of articles all on one page much easier to consume, particularly when I'm going in and out of tunnels and losing signal - for that reason Twitter is of limited use to me since I'd have to repeatedly navigate links - not to mention the reduced load time and required number of clicks due to having the text all in one place.
Am I part of a dying breed? I thought mine was a fairly common scenario, at least among techies - talk about not looking outside my own four walls!