stupidest trend in gyms...people over use spots, and it is a pain in the ass, slows everyone down.
It is totally unecessary unless on your very last set you are afraid you might not make it and you def want to go to failure then I can see askin..otherewise you should be able to get in a perfect bodybuilding workout without spotters.
I will go out of my way to avoid being asked to spot someone, it is an utter waste of time.