What do you think they're for?

Headlights

Yes, they are mainly for seeing what you're about to run over in the dark. But did you also know that they assist other drivers in seeing YOUR sorry ass? Say it's foggy, which it is. Say you're driving a silver or white car. Or some piece of shit covered in primer. How visible do you think you are on a foggy day? You're not. No matter what color your vehicle is, not only are you not very visible in the fog, but you're made even less visible by the contrast between your stupid self and the other people on the road who have pulled their heads out of their asses for one brief second and turned on their lights. I don't care if your car doesn't have some sort of buzzer to warn you that you've left your lights on -- which would you rather have, a dead battery? Or an accident that could result in dead people, possibly yourself included? 'Nuff said.

Turn signals

Did you know that the lever that sticks out of your steering column on the left side turns on (and off) flashing lights located at all four corners of your car? Did you know that the driver behind you might appreciate your using them before slamming on your brakes and tuning? The oncoming traffic just might find it interesting to know in which direction you plan to aim that deadly weapon on wheels, too. And when your done with them? For the love of all that is holy, turn them off! Do you never look at your dashboard? Sheesh.

Sidewalks

They are for walking. Not skateboarding, not bicycling if you're under ten. They are also NOT a doggy restroom.

God, I'm getting bitchy in my old age....