Catchlights make me giddy. It tells me I did something right with getting the focus in the eye. It also lets me know I did ok with the use of natural light, which is often not my friend.
Here is a pic of my daughter. Look in those eyes. I see ME, camera in hand. I have to work on the image that appears in the catchlights, but I love them.
Here is a closer look. Not a 100% crop. I need to learn how to do that.