I wonder if you wouldn't be justified in following up their question with your own of "Why should I choose to work for you?". Seems only fair that they should try and sell you on being part of their team as well.
It's not bold, it's a perfectly reasonable question. In most parts of the US, it's a developer's market. Exploit that while you can.
FWIW, every time I've asked this question, the response is always for the interviewer (sometimes with a slight smile) to try to sell me on working there. Never have I gotten a response like you predicted, and I'd be very surprised if I ever do.
You're not a fungible assembly line worker; you're a highly skilled individual in great demand. Even if you don't really believe that, find a way to convince yourself of it temporarily before the interview: it will have positive results.
There's only one of me to go around, so I'm pretty particular about where I am.