The dumbwaiter system was no more "crude" than the turbolift system, just smaller. And I'm opposed to arbitrarily replacing a perfectly functional piece of engineering with something more complex and energy-consuming just because it's more "futuristic." Using a transporter to beam something from one part of the ship to another is quite simply a stupid waste of energy when a nice, functional physical conveyor can do the job far more efficiently, if a tad more slowly. Using transporter power to synthesize a cup of coffee from raw atoms is a stupid waste of energy when you can just have a vat of hot coffee and a cup dispenser behind the wall. Imagination should be balanced with common sense.