Indeed, reliance on hand written signatures is definitely a big driver of things being printed that really didn't need to be.
Things are looking up though. I recently bought a house and almost all the paperwork with the real estate agent was done digitally (using something called DotLoop, which honestly was pretty shitty, but it did the job).
I literally accepted the (counter-counter-counter) offer and conditionally purchased a _house_ from my cellphone while sitting in the cafeteria at work. It was actually ridiculously convenient to be able to do that.
The bank was mostly the same way. A lot of it was done via email (and a few things that probably shouldn't have been, but whatever..) and their own online dealie.
The lawyer though, that was definitely old school.. big ol` inch and a half of papers style stuff, but that may have been because the guy had to be in his late 60s.