Are you well read? Am I?

The other day I was listening to an interview with Christopher Hitchens, who was talking about Kingsley Amis. I don't even remember what the subject was. But it got me to thinking that I haven't read anything by Hitchens in a long time -- or by either of the Amises, Kinglsey or Martin. Then I felt the sense of dread wash over me that I am altogether behind in reading British authors. What about William Trevor? Ian McEwan? For that matter, there are a still a few books by Charles Dickens, Thomas Hardy and Jane Austen I need to read.
And it's not just British literature. Right around the time the Berlin Wall fell and all those Eastern Euripean nations were shaking off the Soviet shackles, there was a lot of great literature pouring out of that region. Vaclav Havel, Milan Kundera, Tibor Fischer, Josef Skvorecky -- I was reading them all. But I am behind in my reading of Eastern European literature.
Don't get me started on Japanese fiction. A long-time passion of mine, it seems I used to stay current on anything by Haruki Murakami, Kenzaburo Oe, Akira Yoshimura. Now, I am so behind.
If I were just reading what's worth reading in recent American fiction, I'd be behind. But I see all these new titles from authors all over the world, and I torment myself that I need to read it all. Does everybody (every reader, anyway) go through this sort of torture? How much do we need to read to be considered well-read? And is that the purpose, to accomplish some vague goal of being well-read? Or is there really no goal to reading? What do you think?