@Metal-Brain
One reason to not read on computer monitors is because you don't learn as well reading that way.
Reading a real book tends to have the reader have better retention of knowledge gained from reading an actual paper book.
"Yes, research suggests that reading on computer monitors can negatively affect memory, primarily due to increased distractions, multitasking, and the "shallowing hypothesis" where digital reading can lead to less deep information processing compared to reading on paper, resulting in poorer recall of details and overall comprehension."