dogsmother
Well as I’ve had my birthday this week and the only cards I received were from family bar two, I know what I am due to how many I send.
Did you send them in the hope of getting back? If so, you aren’t giving, so much as putting pressure on the recipients to join in with card-sending.
Many people no longer send cards. They are expensive to buy, the cost of postage is high, and there are other ways of showing that you care about someone (arguably much more important than a mass-produced bit of card can do).
If sending cards make you happy, then obviously send them - but I don’t think there’s any reason to feel hurt if others don’t do the same. They aren’t ‘taking’ - you are sending them, so you aren’t
‘due’ anything.