I would rather use a chalkboard than a whiteboard. I would rather have AIDS than use a smart board.
I've used chalk all my life so it doesn't feel weird to write with, and if I can see that I'm holding a stick of chalk I know I have chalk. Not like trying to find which whiteboard marker hasn't run out yet.
However, most people find it easier to use a pen.
Almost all the lecture theatres in my department use chalkboards, and when we've been relocated to somewhere with whiteboards they're always far harder to see from a long way back. The contrast on a chalkboard is so much better.