The handwritten card says you care. The e-card says you don't. Cold, efficient and a wee bit too business-like. If you are going to send an electronic Christmas greeting, I'd rather you didn't, thank you. If you can't be arsed to put pen to paper, then don't bother.
As much as I am looking forward to getting out of the house again, there is something rather special about getting parcels of delicious things delivered to your door.