The most common explanation for why lollipops have holes in their sticks is that it allows the candy to be hung on a string or chain. This makes it easier for people to enjoy the treat without having to hold onto it.
Another reason for the hole is that it helps to prevent the lollipop from dripping as much. When there is no hole, the sticky candy can get all over your hands and clothes. The hole provides a place for excess candy to go so that you don't end up with a sticky mess.
So, next time you are enjoying a delicious lollipop, take a moment to appreciate the simple design of the stick. It may not seem like much, but those little holes make a big difference!