A lot of things are either only possible at all, or a lot safer, with light. A simple example is driving, the more you can see the safer you are. Environmental

A lot of things are either only possible at all, or a lot safer, with light. A simple example is driving, the more you can see the safer you are. Environmental lighting is a big part of this, particularly in countries with tyrannical policing of anti-modification regulations like Australia or (even more so) Germany. Anecdote: My old Mazda was the top-of-the-line when it was made, the nicest road car you could get from Mazda no matter how much money you had. And the headlights were terrible. Well-lit streets were always noticeably easier to drive at night. I could have replaced them with a HID or LED for less than a thousand dollars, and been much happier and safer, for a week. Then I'd be pulled over, given a defect canary (a fine, a huge sticker on your windshield labelling you to other police to harass, as well a requirement to prove you've "remedied" the situation). Get a few defect notices, and the police can have your car crushed into a cube with no recourse under "anti hoon" laws.