Letter writing is unfortunately a dying art form. I save every card and hand written letter that I receive. In the age of instant communication, I value the time and thought that goes into a letter so much more. I had two pen pals when I was in middle school and reading their letters brings back so many memories of the things I loved in the 1990s, like Sanrio, gel pens, and boy bands. I also exchanged letters with a dear dear friend of mine who passed away about a year about. Reading her encouraging words and seeing her handwriting makes me feel still connected to her.
I also value the art of writing thank you letters after receiving a gift or writing a letter just to make someone smile. I'm not sure how many people in my generation still write letters, but I absolutely encourage you to. Writing a letter seems more meaningful and the words seem to have more depth than a text message or email.