DEAR ERIC: I may be hopelessly old-fashioned at 73 years old, but when my children were young and received a gift, I gave them notecards, stamps, addresses, and explained the ways a “thank you” could be worded. I encouraged them to include information about their lives, school, etc. It seems that now parents don’t care enough to teach their children to acknowledge a gift. I’ve been chastised for discontinuing to send cards/gifts/money to young people past the age of 15, who never thank me, or even acknowledge a gift. I am frustrated that I am forced to contact the recipient simply to hear the …