So they can bank the money that we pay and then make loads of interest before they have to start paying out!
Seriously though I don't mind. It gives a chance to recover from buying tickets before you have to think about travel and possible accomodation costs. Not to mention the cost of buying souvenir memorabilia!
I'm glad our tickets went on sale in December. They are bought, paid for and ready to go! Now all I need to do is look forward! If I had only had a 6 or 8 week lead in I don't think I'd have been able to afford 2 gigs!