Why sell calls?

[tzme415]

I have never understood the concept of 'Selling a Call'. Why can't we just make the call? In some ways isn't just making the call the same way every time showing confidence. Why sell the call unless I think I might be wrong? If I make a clear and strong call every time, then I don't need to over dramatize the close ones. I make the same consistent call and show confidence in my call. No need to 'sell'. Just my opinion.