[kevingadd]

As you hint at, Xcode is a part of the problem here. The debugging parts of Xcode (ignoring the horrible things wrong with Xcode as a whole) have always been a pile of junk, even before they introduced lldb. This is complicated by the fact that in my experience Xcode was always built upon a quirky Apple fork of outdated third-party tools.

So, I guess what I'm saying is: Even if lldb isn't ready yet (it probably isn't), you shouldn't judge it based on your experience with Xcode. Being integrated with Xcode would make any piece of software look like junk even if Knuth wrote it.