In fact I have fucked bigger women for free. I never wrote a thesis. I simply said it's fun to fuck a big ass once in a while, but I wouldn't pay before meeting her. But I would still pay her if she wants money for it. Whether it's for free or otherwise, is irrelevant. It's still fun either way. If the opportunity presents itself, then why not take advantage of it? If she wants to get paid, then pay her. If it's free, then it's free. But I wouldn't pay a deposit before meeting her because you risk losing money and the opportunity to fuck her. So you lose out both ways.
By the way, you seem to be inexperienced. Your thesis is something I don't agree with by a long shot. Let me tell you a wierd story. Your fantasy that you have suggested that I should try out, will not always pan out the way you may predict it will. I was in a situation that was much better than your fantasy. I had asked a woman out to dinner. We have known each other for quite a while. We had a great dinner at a nice restaurant, we were getting along fine and she was very happy. We spent the night together and she enjoyed everything. The night couldn't have been any better. The next time we talked to each other she demanded that I was required to pay her the next time we got together. That came out of nowhere. So, I kindly tell you this story just to let you be aware that women's way of thinking is very wild and unpredictable. And there's no sense in trying to figure them out, because you never will. Women are simply a different species. You never know what they're thinking or what they'll do next. I can tell you a few more wierd stories. It just goes to show you that women can't be trusted.