RE: a matter of choice
What you've said is true enough, but the interview isn't the place for it. The questions are things that a bit of research will generally tell you. And, if not, they are things to talk about during the offer. They hold the job -- you have to convince first that they want to hire you. Once you're at that point, it is time to talk terms.
Having said that, I would never ask "What is a typical work week like" or "What do you like about working here" or similar. These silly questions don't impress me as someone who is prepared for an interview. Interview should be some kind of conversation about the company, the job and the candidate, but I would hope you could come up with specific questions based on the interview.
