Why Is It Forbidden to Look at the Moon?

Hello Rabbi, in the evenings, I enjoy sitting on my porch to breathe fresh air and gaze at the sky and the moon. It is very calming for me. I should mention that I focus on looking at the moon and track it according to the calendar. I always know on which side it will appear on every date and how big it will be. I understand that it is forbidden to look at it because it can cause a decline in vision, or even forgetfulness... and most importantly - it is embarrassed because of everything that happened with the sun, etc. My intention is not to embarrass it; on the contrary, I admire it and enjoy seeing it. I would appreciate it if the Rabbi could explain to me why it is forbidden to look at it and whether I am correct and not causing harm by my gazing.