Unreliable narrator

I e-mailed Vision Australia, briefly introducing myself and volunteering to read books, newspapers, etc. onto tapes (or whatever they use) for the blind. A week later, I received a thanks but no thanks. Not 'cos they didn't like the cut of my jib. We never reached the jib-inspecting stage. I was informed that as all "narration" (at least in Sydney) is done during business hours, my full-time job would prevent me taking part. My disappointment is now tinged with curiosity. Does that mean most readers are retirees? Are there any young voices? And when do the weekend papers get recorded?