DrChiper,
That's understandable, I think we all do it. Particularly as regards calibre since most features are already included but, not needing said feature, we forget it's there.
As for your comment, "Well, you can't have everything"... We could if they would finally resolve those pesky cloning bugs! It's really the "here Kovid, Kovid, Kovid..." part of the process that gets a bit tricky.