You may think I'm joking. I am not.
We've had some performance problems with our mail server recently so I've been doing all kinds of profiling to try to pinpoint the problem. In doing so I calculated the number of message rejected vs. queued vs. spamassassinated vs marked as Junk in Thunderbird (just in my inbox).
Believe it or not, 99.44% of all messages are pure SPAM. This is a sad world we live in.