I don't think I've ever come across a card with a preprinted signature!
I hand write fairly long notes inside cards and I always hand write letters when writing to express my condolences on a death. I also hand-write replies to those who write to me by hand - including various elderly relatives and friends; but I have to admit that I type out what I want to say first and then write it out, as I find that I've lost the ability to think and hand-write at the same time. Or perhaps more accurately is that I've got used to the ability to edit my typing and thus get frustrated if I hand-write something that doesn't sound quite as I wanted and thus either have to live with it or start again.
I also find that my writing has deteriorated considerably but improves with a fountain pen - so that is what I use these days.
I've never yet sent an electronic greeting but find myself increasingly tempted to do so, especially when sending cards to our many family and friends in the UK (where I lived until I was 30) - not to save time but because it is so costly to send a physical card and while that might be something that I want to do, I find myself increasingly reluctant to put the recipient in the position of feeling the need to send one back!