It is outside the bounds you indicated, but my husband and I have decided not to have children: we're in our late 20s (not quite in the 30s yet), and he's a high school teacher while I work part-time for the city in the library system, as well as freelance writing.
If you feel we might fit into the profile you're seeking, please feel free to contact me. If not, I wish you best of luck finding someone who does! I'd also recommend you try this site:
It is a community for child-free persons, and you'd be very likely to find people willing to be interviewed there.