Carpenters and remodelers? why why why?

Question:this is for professional carpenters and remodelers. Why do so many of you tradesmen use silicon caulk? I am a painter with 26 years under my belt and I want to go into a rage when I find silicon applied by a pro when it is adjoining a paintable surface. SILICON IS NOT PAINTABLE AND PAINTABLE SILICON CAN NOT BE TOUCHED BY YOUR SKIN TO TOOL IT OUT (IT BECOMES UNPAINTABLE).You tradesmen would be saving money and get better results and painters would not go bezerk if you would start using caulks like Geo cel or some copolymers,they perform better.So my question is why do you use silicon?

Answers:
I have heard that lament enough times now to know that it saves me money to use siliconized caulk when it it permissable.
It is paintable and holds a lot of the properties of silicone.