singles, abandoned market?

Ok, here is what happened.
I received a call from a big airline mileage plan. They are organizing a focus group event. Which means they invite their target customers, figure out how to make them happy, and how to attract more customers just like them. You spend 2 hours with them so they can pick your brain. In return, they pay you $70 cash for your precious time and sharing your thoughts with them.

I thought, nice move. This company apparently care about their customers. It would be fun for me to make myself heard. I'd also love to observe how it is conducted because I facilitate the same kind of workshops in my full time job. Plus, I'm getting paid to do it. Sweet. After I found out about the time and location, and the caller confirming my willingness to participate, the qualification process started over the phone.

First question: "How many people are staying in the same household with you including yourself?"
"I live alone."
And that first question became also the last question. She thanked me for my time and quickly ended the call before I could say "Does my dog count?" although I don't have one.

Obviously, I am not one of their customers that they care enough to listen to. And the only reason was that I AM SINGLE. I had a similar experience with a travel agent. They spared me for a 2 hour hard-selling session because I am single. That I didn't mind. But who knows how many companies out there are crossing out "singles" from their desired customer list. Looks like the only ones who really really care for the singles are the dating companies, with a promise to move us to the more desired market section.

They are missing out, big time. I am the most traveled consultant in my team, Monday to Friday for months, because I'm single. I take at least two overseas trips every year, because I can simple pack up and go. I know I'm not alone among my single friends. But seriously, are we categorized as abandoned market?