Actually, I really like running in the dark. Not that I mind the light, but in the dark, there are even less distractions, and it seems more peaceful to me.
When I run in the dark (usually early mornings), I do like it when there are absolutely no lights such that my eyes adjust to the darkness, and I can see the street/trail in front of me. However, every time a car goes by, I temporarily lose my night-vision. For safety, I used to wear a small blinking light on my shoe, but I recently bought a Tracer 360 vest, and I really like it. It is comfortable and bright. With this vest, there is no excuse for cars not to see me, and so far, they definitely seem to see me and move over accordingly.
One of the best things about this Tracer 360 vest is the battery status and management. Every time you turn it on or off, it blinks green twice if the batteries are good. When you get to about an hour or less of battery power, it blinks yellow twice when you turn it on or off. So, you have no excuse to run out of batteries mid-run... which brings me to my next point. I found out this morning on my run, when you are getting really close to running out of batteries, it switches to a power-saving mode and just pulsates red instead of your chosen color or color pattern, and it seems to do this for a good amount of time (at least 30 minutes this morning, and it was still going when I finished). I knew I didn't have much power left when I started this morning because it blinked yellow at the beginning and end of my last run; however, when I looked in our battery drawer, there were no AAA batteries, so I decided just to wear it until it died. I think I actually said "cool" out loud when I was halfway through my run and saw it switch to the red pulsating, but I still didn't think it would last for the rest of the run. It did.