I do have an iPad with an Apple Pencil, but even that I use quite rarely - though I at least know where it is. If I'm annotating a PDF, that would be my tool of choice.
Aside from that, I'm not sure that my daily life is really that unrecognisable from anyone else's. Just that instead of writing stuff on paper, I either type it or tap it on my phone. For maths, I'm just quite quick at TeX input.
I'm not sure exactly what you think people must be handwriting:
- Notes? I use Obsidian for work notes, Google Keep for stuff like shopping lists
- Signatures? Delivery receipt signatures are done with a finger on a touch screen, stuff like employment contracts and finance paperwork have basically all moved to e-signatures. I genuinely think the last thing I signed with a pen might have been my mortgage, and that one I had to go to solicitor's office anyway as it had to be officially witnessed.
- Paper forms? Print, sign and scan was occasionally requested until a few years ago, but I did it in the office because I also didn't own a printer at that time. Even "important government forms" are done online now.