This picture is probably taken at a dark place. The original picture is probably under-exposed. The scanner software tried to pick up details on the negatives and could not. That is why it tries to make the whole picture whiter. Thus the image looks a little wash out.
If you treat Photography as an ART, then there is nothing wrong in doing post processing on your picture. The final output is more important than how you achieve it. But if you treat photography as a technology tool or science and expect final output to be perfect every time, then get the technical aspect correct at the point of image capture, so that you do not need to do any post processing after scanning.
A well exposed negative require less processing or sometimes no post processing at all. But in real life, we all know that it's not possible to get a well exposed image across the whole frame. Some shadow details are hidden or some highlight are blown out. That's why there's such thing as dodge and burn.
Hope that helps. My suggestion is, try not to get so hung up on scanning software, whether to post process or not. Go out and shoot, enjoy the camera, enjoy the process, B&W development, admire and share the picture you have taken. Don't get so hung up on gears and tools.
It will be a more enjoyable journey this way.
