Did you just buy a new car and find yourself disappointed with the headlights? This is often a place where car companies will cut corners. They know that most people never test the lights out on a test drive since the dealerships are closed after dark, so they put cheap lights in the vehicles and hope that they sell based on other things. This may not seem like it would save them much, but you have to remember that they plan to sell hundreds of thousands of cars, so it can be substantial.
If you learn more about the headlights that can be installed after you get the car, though, you will find that this is an easy problem to fix. For most headlights, it should not take you more than a few minutes to take out one and put the other one in, and you can do it at your house with minimal tools. You may need more advanced tools for some cars, but, even then, it is not a big job.
When you get the new ones, you are going to love the increased visibility. This can help you avoid accidents at night when things like deer or pedestrians could run into the road. You will be able to see better in the rain, when normal headlights turn to nothing but glare. On top of all of that, you will also be more visible to the other cars on the road, which helps you avoid accidents as well.