Follow on 
I hear this from a lot of leaders. I believe this is the wrong way of looking at it. Yes, it does take you a few more minutes to coach than it does to manage or to just do it yourself. Remember, coaching is about building capacity in others. The investment and time you make on coaching should pay major dividends down the road.
Coaching is not a quick fix. It is a mindset and general philosophy about leadership and business. If you do not have the patience or fundamentally do not believe in coaching, do something else.