As someone who studied without laptop through an entire bachelor's degree - it is a valid option, and I still often make handwritten notes of study materials.

When you write things down by hand, you process information for longer and use more parts of your brain to do so, which genuinely helps to memorize study materials.

It also allows for more focus. Personally, I found that when I moved, eventually, to using laptop in my studies, it has reduced my attention span and added unnecessary distractions. When all you have at your fingertips is paper and a pen, there is nowhere to get astray.