I dont understand why you're so upset?
But I want to hear you out - you have a lot of experience, so your perspective would be helpful for a lot of people.
Personally, I can pay for a room. So for me, it is the principle of the matter. There is more work, more effort, and more stress on me to get involved with a couple. I have to not only deal with the wife's wants and needs and emotional health, but I also have to be concerned about the husband's emotional needs.
Isnt' that worth paying for the hotel room?
Just so we are clear - I do house calls, so its not like I'm demanding a hotel room. But I know a lot of couples do not want any play inside their own home. And in those situations, its a real show of good faith to book the room and then tell me where to meet them, rather than put all of that responsibility on my shoulders.
Now, you are a traveling bull, so it might be easier for you to arrange encounters at the hotels you have already booked. But as someone who doesnt travel that much - Id prefer the couple take care of it for me.