Boomer, raised by very lah-di-dah methods. We were supposed to do that for everything, and I did, but I resented the idea that a heartfelt spoken “thank you”, with a bit of a discussion about why it was so appreciated, wasn’t enough. Now I write them only if I won’t be seeing or speaking with the giver. My daughter is a millennial, and feels that a mandatory written card is impersonal and somewhat rude, and would much rather talk to the person. When my mother (90 years old at that time, she’s 97, now) roundly scolded my daughter, and told her that there would be no more gifts then, my daughter said that that was good, she didn’t want stuff from her grandmother, she wanted conversations and time spent. My mother was totally kerflummoxed.