The loss of firewire may upset a few college students doing audio/video editing courses and a few pros that prefer the smaller form factor/price of the new MacBook, but the MacBook has always been a consumer orientated device. And for much the same reasoning Apple abandoned firewire connectivity from iPods they are doing the same with the MacBook.
As much as you would like to believe these laptops are geared towards students doing video/audio editing, Apple is chasing a much more lucrative and larger demographic- late 20-early 30's, in well paid jobs, that have higher disposable incomes.
And these people aren't buying miniDV camcorders- they're buying Flip and hard drive/flash camcorders that almost exclusively use USB2.
Does it suck? Yes. But history has showed that the better format/interface doesn't always win. The majority of computer users couldn't tell you what lead connects their equipment to their computer. They will tell you, if asked, the one that came with it in the box.