I think I understand that people want to have the option to switch, but I never, myself, had any reason to do so. I mean the differences between the services different providers provide is not that much (for me) to justify the switch. Maybe that is because I am on a grandfathered unlimited plan. Over the years I have periodically (with every new iphone), reviewed other options and never found the switch compelling.
Anybody knows any reason other than "just having the option" ?