Even if I wanted to, I couldn't help smiling after reading this recent Cyclocross Magazine article by Lee Waldman. Especially this paragraph:
The most important thing about cyclocross racers is that they are demented! Why else would they spend so much time carrying a perfectly rideable $2,000.00 bike if they weren't? They love the pain and suffering. Smiling through the dirt, they laugh at the squeaky-clean roadies. They survive summer, wish for winter, anticipate autumn. But, the most important thing about cyclocrossers is that they are demented.
I'd say that nicely sums up why we're out running at 6:15AM before work and then hit the bike for another workout after we get home from work. All for the glory that is cyclocross, a.k.a. - competitive dementia.