I'm this guy. I can't sit in a too quiet space and get anything done, I'll go stir crazy. I usually work out of coffee shops or on my balcony where I can hear kids playing in the yard, some traffic, someone listening to radio a bit further away.. random noise. Without it, after maybe 20-30 minutes I get antsy and need to get out.
I could do without all the bird noises though, the sea gulls here are incredibly annoying.