Actually, it doesn't make any sense because while many people that will buy this machine don't need it, there will be a large number of people that can't use it. No one will buy the machine because it is missing a firewire port. There are many people that will not buy this machine because it lacks the port.
Isaac
I agree with you that some people will not buy it because of this port, but apple was low on port space and had to make a decision and if that decision fills the need for the majority than that's what they go with. Apple does this more than any other company I know. Not just in terms of hardware, but software as well. They limit your choices on things to make the user experience easier which is great for 80%+ of people and then those 20% of people like me that like to go more into settings can buy something else or just accept it.