Personally, I've used an Envy x360 as my laptop through my CS degree and with 1 more semester left, I can definitively say that having a touchscreen to take notes is much better than cheap pen and paper.
The biggest bonus is having my notes in the cloud. I can reference my notes on my phone, laptop, personal desktop, and on other people's computers. I don't need my backpack and notebooks with me to check on a theorem, pseudocode algorithm from class, or how to format that SQL query.
The second feature I use is being able to copy/paste and move notes around. If I run out of space (I like to keep my column width normalized), I can select an area of notes and move/resize, or transfer to an entirely different notebook. I can also copy text from a professor's slides or from a paper I'm researching, and then annotate that text in my notes.
If I was just taking notes for an english or history class, similarly to @_aavaa_, I don't think it would be as useful. Since I'm taking Math and CS courses with equations, graphs, system diagrams, and code I want to annotate, it's been very worth it. However, for short daily notes or scratch work, I do keep a (paper) notebook in my backpack as there's no bootup time or login to scratch out some ideas.