Because he is The Greatest Muppet Ever. Search your heart. You know it to be true.
Tell everyone you know that today is International Grover Appreciation Day. Because it is THE BEST HOLIDAY EVER.
That is all. Thank you.
Update, 11:38 am: Quote from Athena: “Is there an Elmo Day? Because if there is, I’m going to have to punch someone.” I AM SO PROUD.
Also, feel free to download the picture above from here.