Handwriting is quickly becoming a lost art. I'm saving whatever surviving letters I have received over the years. I suspect that old-fashioned "letters" will be collector's items before too long, and they will certainly be something to show and explain to the grandkids.
I notice that even 40-somethings today print in block letters when they are forced to put pen to paper. When I went to school, back in the Middle Ages, "Penmanship" was a subject that you were taught, then tested and graded on. I remember I got as high as an "A-" in penmanship. In many school systems today, cursive handwriting is not even taught to the students.
It's rather sad that our grandchildren probably won't understand what "getting a letter" means. If you're past your twenties in age, think back through the mists of time, all the way to the quaint 1990s. Do you remember when you found a handwritten envelope addressed to you in the mailbox? Admit it--it made your day!
Those days of pen and paper, like the days of board games, hardcover novels, and telephone landlines, are mostly behind us. But I think the decline of cursive writing is a loss for us all. You can write that down.