My main reason for sticking to digital notes is that I don't lose them and I can search them up later. If I could somehow search my handwritten notes and have them automatically uploaded to the cloud, I'd stick to handwriting.

Do you hand written note folks ever back up those notebooks by digitizing them?

I used to carry a small stack of index cards and a space pen everywhere I went. These days I don't. I take most notes on a Linux machine and sometimes my GrapheneOS phone. I mostly read notes on my phone though.