Regarding the space management, there are many solutions straight out of the programming world, of course: utilize both sides of the notebook, reserve a minimum number of pages per topic, keep an index with free pages, etc. But there are some hardware ones as well, I'm trying Atoma notebooks (https://atoma.be) these days.
Even with the capture downside, I don't think that I can do away with paper and pen. There's something invigorating about using paper that no keyboard or screen could replicate. More in touch with your brain and with your own words, that your feelings flow better into the ink. It is something that makes me enjoy writing.
I've considered e-ink devices in the past but I don't see much value from them. They're a fancier way to draft things at best, in my case, and a worse PKMS/Todo list if anything compared to dedicated tools. I'm paying for an extra device that gives me a bunch of things I won't use, anyways.
Anyone else into what my high school biology teacher loved referring to as "pseudo-arachnomorphic diagrams" (Mind Maps[1] / Spider Diagrams)?
They're still my primary paper-based realtime note taking method. They seemed to get a lot of attention a couple of decades ago, but I don't hear them mentioned much recently.
Lots of online/local Mind Map tools available, but I've never really gelled with them (though you do get self-organisation of the nodes!). Once in the digital realm I'm more likely to make notes in Markdown.
I can keep years of notes in a file which I can take and access anywhere whenever I want.
I have tried over the years to get into hand writing and note taking. It never works. I am so grateful for typing, it has saved my life for decades. I can type ridiculously fast, and it doesn't wear me out.
I have finally stopped apologizing for this, or thinking something is wrong with me. It just isn't for me
[1] Lion Kimbro. How to Make a Complete Map of Every Thought You Think. 2003 https://users.speakeasy.net/~lion/nb/book.pdf
However had, for anything else I use the computer, and I style everything the way I need via HTML+CSS for the most part. I don't use HTML directly but a simpler and easier to use template, which is programmable (via ruby). There I also make use of javascript and have a multitude of effects to use. I can use the browser to research past content I stored and it is visually pleasing. And it takes not as long as handwriting either. So while I do use pen and paper still and probably will for the rest of my life, I am mostly in the digital era myself. I don't understand why I'd want to use pen and paper. Granted, I have to archive a lot of things, but I use various USB sticks and USB-connectable harddiscs; these don't take that much space away, compared to pen and paper written stuff or other hardcopy books. I don't think I will go back to the only-pen and only-paper, ever. I am not saying digital-only has only benefits, but if I compare all advantages and disadvantages then the digital lifestyle has more benefits. For instance, I don't need to store hardcopy books anymore (I still have them, I still use them, I still like them, but whenever I am about to purchase anything anew, I ask myself whether I want to have physical space be occupied by a book. Often the answer is no, if I can just use a .pdf instead.)
I like the pilot precision v5 pens because they come in a lot of different colors and the point is very fine.
For notebooks, I prefer the Leuchtturm 1917 series. They come with page numbers, a space for TOC, a pocket in the back for stuff, two book marks, and lots of different sizes and colors and page layouts.
That's important because the other important thing about hand notes for me is one book per topic, and keep them different colors because they will pile up and it helps with differentiating them.