Before I start, I know that less and less cards are being sent. Texts, WhatsApp, Facebook means that Best Wishes can still be sent.
However, I'm still a card sender and give gifts and that's my choice. My Dad and his wife havent sent cards to myself and DS for a while and I can't remember them ever sending a card to DH. From what I can gather, they still give and receive cards/gifts to/from her family. While I totally get that's their choice I'm wondering would I be unreasonable to stop sending cards to them?