Cause it is fun and you have not done it before!!!
Or maybe you just want to set endpoints without using your radio...
Or maybe you secretly plan to take over the world with your custom programmed servo? I have no idea, but for the next 20 minutes, cause you know we can't do this all day, I will throw in a free back of horse poo to smear on your neighbors car! A 3 cent value, totally free! Call now.