An important part in the activities of scientists in all fields (optics, physics, computer science and etc. ) is a teaching, when you have to stand in front of many students and explain something on the board.
I think that both of you (the scientist who teaches) and your students will feel more comfortable if you have a neat handwriting.
In addition, the efficiency of work very often depends on understanding of handwriting of our colleagues and vise versa.
Since I don't have perfect handwriting I would be happy to get useful tips on this topic.
Thank you in advance.