Yes sooner or later the roll runs out and a new one needs to be put on the toilet roll holder. Which seems like a minor task. At least it does until you're faced with a simple question.
Under or over?
You may not have a preference. You may not care. Or you may be one of those people who have a passionate proponent of one orientation or another.
Or... more sadly you may be in a household where you are of one mind and others are of the other persuasion.
In which case, though I'm not sure it will help, may I recommend logical arguments and dispassionate discussion? If you need some ideas and more background... Wikipedia has a page to help you understand the dilemma of Toilet paper orientation.