Do you use lights on your bike at night? Do you know that it's required by law? You don't need to be able to light up the street, but you do need to be visible. It can make the trip safer for you and others you may encounter on your journey - pedestrians, other cyclists and drivers.
Being visible doesn't have to cost you an arm and a leg. You can find inexpensive solutions (from this manufacturer or others) in your local bike shop or online. Be seen and be safe.