An obvious advantage of having a hammer rather than a striker is the safety aspect of being able to place one's thumb over it when holstering...to both insure that it has been de-cocked (if applicable) and that nothing has entered the trigger guard to press the trigger to the rear (possibly causing the gun to discharge in the holster). This is a common safety technique taught in many more advanced handgun courses.
One may choose to ignore safe gun handling techniques at their own peril, but the existence of the advantage shouldn't be disparaged