Thats funny because I would've though Unlimited Mobile data would jack up the price far more than the odd MMS

.
MMS on my contract is part of my free SMS usage so I don't actually pay any more for it. Also when I send it to someone they don't have to pay data charges to view the message and it is essentially PUSHed straight to their phone.
The reason MMS wasn't included is because the American market didn't use it much. The story is a little different over here in Europe.
For those that don't use it, then don't download the application. For those that do use it is good news.
The debate about the need for MMS has long gone around in circles but the answer is simple. If it is implemented and doesn't affect you, why do you care?