Its important beacuse:
-We can have fun
-Our friend will feel special
-We could also throw a party
-It would be popular over the world, because most children and adults have friends.
But:
-Some people don't have friends, they could feel lonely.
-Not everybody would agree
-Its not something REALLY important, so it's not really useful.
In the end, we noticed that it could be fun,, but it's also kind of not interesting. In my opinion, I would really enjoy this day.