If Apple's position on Flash wasn't perfectly clear, Steve Jobs has taken the time to write a 1500-word open letter regurgitating the party lines at length. In a word (or three), Apple's position is "Flash sucks unwashed balls."
Flash was created during the PC era – for PCs and mice. Flash is a successful business for Adobe, and we can understand why they want to push it beyond PCs. But the mobile era is about low power devices, touch interfaces and open web standards – all areas where Flash falls short.
It's nothing Apple hasn't said before, in one form or another—that Flash is a closed battery-and-resource whore that sucks the life out of Apple's innovation and you just don't need it anyway. The idea behind Jobs himself repeating the reasons Apple hates Flash is that you'll finally shut up about it. [Apple]