They said the same thing when they did away with the massed cavalry charge. I suggest we deal with it. "Smart" mortars are more effective than howitzers. Rockets are more accurate and have more range. The "conventional" artillary that we do need isn't conventional and isn't suitable to weekend warriors as it is too complex and needs constant training and practice.
Of course, having said all that, I'd love to be able to call in a salvo from the 16 inch guns of Big Mo, even with her mechanical computer targeting system. There's something to be said for hitting a parking space sized target with a shell the mass of a volkswagen from 30 miles away.
What I really want, however, is a Sheva gun named Bun Bun. "That's what you get for letting rednecks play with Anti-Matter!"