> And Apple taking 30% of that... for what? Payment processing

uhhh.. hosting and bandwidth for potentially millions of downloads and updates and your videos and screenshots?

Covering user refunds?

A reviews and feedback system?

Crash logs?

Showing you in user searches?

The Editor's Choice and Featured Apps lottery?

Invitations to develop for yet-to-be announced platforms?

Giving your users peace of mind that your app is sandboxed and cannot indulge in hanky panky?