Measurement in Object Oriented Paradigm

Is object oriented software complexity metrics important to a successful software development industry? And if so, how important is it, and why is object oriented software complexity metrics so important? Many readers and stakeholders often ask why object oriented software complexity metrics is important with respect to one?s measure, particularly in the software development process. Some people also want to know how object oriented software complexity metrics can impact overall quality of software, in addition to the impact object oriented software complexity metrics has on one's developments.