When I was in school and university, I wrote notes all the time that I didn't reference, the act of writing things down helped me learn. Reading the notes back didn't really help me learn at all. Rewriting the notes, on the other hand, that really helped.
I don't think writing notes on an iPad would really make any difference for me tbh, if I'm writing something to be referenced, typing it up is better. If I'm writing something not to be referenced, it barely even matters how I write it.
I took notes my whole life because I went to school a majority of my life - they just always sucked so I did poorly :) Notes help in understanding things but the part where I failed was not rewriting them combined with the fact that I have horrible chicken scratch.
I want ability to refer back to notes but 99% of case I never refer to them