You have to notice two main trends about this Royal Wedding. 1. People are obsessed. 2. People are asking why there is an obsession.
Let me break this down for you in a very technical theory I have come up with.
It comes down to jealousy. Jealousy is a reflection of your own issues. Fixation is a form of jealousy in this case. People are fixated on the royal wedding because they are jealous. But that's OK! Who dosnt want Kate's fairytale?!
So there you have it!
But actually there are other reasons as well. There are people who love weddings (me), or are interested in historical moments or its just unavoidable because we live in a society that is crazy about this stuff...