5 main advantages of the postcards with hand-written messages:
- recipients get to see your handwriting which is a part of your personality
- you get to see your handwriting and remind yourself on what it looks like
- you don’t need electricity to see it
- you can look at them without being exposed to EMR (electro-magnetic radiation)
- unlike email, it has much less chance to be deleted immediately after reading
I guess I could think of more advantages, but this should be enough.