Interesting question Deb. I have been with a few "size-queens" over the years, and have had fun with them for the most part. They have always wanted to measure me, which i haven't minded.
I had great sex with a few of them as they seemed to be more skilled with dealing with large cocks, and had suggestions for positions, etc., that I had not thought of before. Except for one, those relationships were fairly short and centered mostly on my cock and sex, which was ok at first but I do look for more than that, especially as I have gotten older. One woman I was with actually was more into holding and folding my cock than sex, but she did great blow jobs.
For the one woman, who was into size, it was primarily a practical issue as she was quite large down there, and she told me that below a certain size just didn't seem to arouse her that much. We dated for a few years, as the sex was great, but we had other diffferences so we did part.
Ideally, I would love to be able to have a long term/permanent relationship with a woman who is a size queen, so long as we have other things in common and love each other for other things besides sex, etc. Those women are probably out there, but I haven't come across any yet (not that I have that much experience either).
When I was much younger I mistaked some women's interest in my size with an interest in me, and was then disappointed to find out otherwise. As a result I became fairly weary of women pretending to like me just so they could get to my cock. And, there times when that was ok; let's have some fun, and that will be all there is to it. So, I guess when I encountered a size queen i got to the point of not expected much more than sex fun, etc. out of it. I don't have negative feelings about size queens, but rather learned to be more realistic as to what to expect.
Today, I am looking for something more long term. My current lady friend actually wishes I was smaller, but we still have good sex and are quite close, so I am happy with things now.
Jack