I suppose it also depends on how much you make of these days. We do not make anything special of Mother's/Father's day and while it is nice to receive a card, we do not even want presents or any big show. Our children do not live near us, anyway.
DS struggles with ADD and has enough of a problem remembering where he left his car keys and wallet. However, last week he made a 400 mile round trip, to be present at the funeral of my dear friend, where, in childhood, her son had been one of his friends, despite having to bring his work with him, and that journey showed his love and thoughtfulness for us. That he forgot about a father's day card is neither here not there.