Headlights on a Vacuum Cleaner

I've always been fascinated with the need for a headlight on a vacuum cleaner. What thought process led manufacturers to add this feature? If the lights go out, wouldn't the power to utilize this tool be obsolete?

This morning I made a point of doing my vacuuming before the sun came up, with all of the lights off, to see how necessary this addition was...

Apparently it's set on a permanent "bright" setting which points up and out as opposed to downward in the direction the user is trying to pick up dirt. Despite all of my efforts to not look at the light itself, it's so bright I am still seeing spots as if I've been staring at the sun itself and I finished an hour ago. I couldn't actually see if I was getting all the dirt and pet hair up and if I actually looked in the path I was pointing the machine, I was completely blinded and have now understood the concept of why "a deer in headlights" stands immobile. They can't see to get out of the way. I nicked the furniture, ran over my foot multiple times, and sucked up the corner of the rug until I had to power down and get the needle-nosed pliers to unwind the rotating brush, all while trying to see around the glaringly bright white spots in my corneas.

Conclusion: The purpose of this light is to tell you the vacuum cleaner is actually powered on, just in case you happen to be deaf and can't hear the motor running. The light is so bright a blind person could also tell it was on and the company needs to sell the colored attachment that was not in the package to cover this light for the average consumer that would like to retain sight in the future....