What's up with ants, spiders and other insects (yes, I know spiders aren't insects) coming into houses? There's a huge planet out there for them. Why do they want to come in and risk getting stepped on by people? Is there not enough food outside of houses for ants? And when I see a spider waiting in a little corner where there's almost no chance of a little bug coming along to be entrapped in a web... uh, what's the point?

I'm not so sure insects are all that smart.