Do you leave your platter spinning while switching


I have read various articles that advise you to leave your platter turning while switching records. I have yet to find a good reason behind this suggestion. What are you guys and gals doing? What would be the benefit of leaving the platter turning vs stopping it?
andyprice44
This is why I like direct drive tt....I dont have to worry about stretching my belt .
I always stop my turntable spinning while changing records.  I do give the platter a helpful push to start it spinning when I start it back up. 
I've had my turntable running since the summer of 2012, hoping for a definitive answer.