Something I have noticed overtime, not everyone feels the same way. I have noticed that people don't always write them, which is fine. It isn't important to everyone. I have always been taught that you write a thank you card when someone does something nice for you or buys you a gift, etc. I used to dread writing them when I was in 4-H because there were always so many that needed to be written. As an adult now, I appreciate learning this valuable trait.
Thank someone today. :)