Why shouldn't that go live instantly?
A disgraced pop star has just been found guilty. I couldn't register Bob-The-Builders-Crimes.uk before the verdict and I want to get my story out now.
I've had a brilliant idea for an eCommerce website but it is 1705 on a Friday night and, because no one works weekends, I have to wait until next week before the domain is agreed.
I agree that there's no great harm in having to wait a day, or a week, for registration to complete. But in a world of instant gratification, it feels old fashioned.