We are all insane. And I'm not just making a rhetorical point, either. We all do stupid things we know are bad for us, for no compelling reason. We smoke, eat too much, don't exercise, drive too fast, spend money unwisely, trust fools and villains and abuse those we love and who love us. We take unnecessary risks and deliberately avoid profitable actions more often than not. Everybody does this to some extent, just some more than others.

You see, the human mind is not a highly optimized machine that is designed by evolution to work all the time at peak efficiency. It's a hastily cobbled together collection of evolutionary accidents that has somehow managed to muddle through to its present state. It's good at some things, bad at others, and inconsistent as hell. And no two are alike. It's amazing how well it does work most of the time. In fact, its a wonder it works at all.

As Bob Dylan says, (perhaps in a different context);

"We're all idiots babe, it's a wonder we can even feed ourselves."