https://journals.sagepub.com/doi/pdf...63460716678561 100 men were surveyed that publically identified as straight while looking for a partner for some sex on a craigslist Male for Male page. They dont feel comfortable coming out as non-straight simply because they believe they will lose privelage or that the concept of bisexuality is often not understood. Its a good annecdotal read since the number of the people is not huge and not from various geographic areas. Not sure if anyone else nerds out over this or not.