Ok, let me rephrase the question: if the service provided is to save a complete webpage, why would I want to muck around with an RSS reader and an API and all of that extra effort as opposed to just saving in my browser, whichever it happens to be?

I don't just mean Chrome, either. Mobile Safari seems to have a pretty good offline pages functionality included with it.

If you are happy with Chrome, then there is no reason to change. Nevertheless being able to access his bookmarks from any computers is already a good thing to have for some people