I do tend to read historical romances, when I read romances, but I think you have to be very, very skeptical of what is presented as history in those books. Many of them include reasonably accurate historical events and even actual people, but I think that the depictions of society are far too filtered through the lens of modern thinking to be condsidered accurate representations of the past. The Regency period in particular has been distorted beyond all recognition by romance novelists. The number of dashing rakes who just happen to be insanely rich dukes who appear to be useless but are actually deeply devoted to the progressive management of their lands, and who are subsequently tamed by unconventionally intelligent ingenues with dodgy backgrounds and startling beauty, well, it's truly astounding. Now, I love books like that, but --and I probably sound like an awful snob saying this-- I truly don't consider those books "real" reading. The plots are always basically the same, they don't use any literary techniques to speak of, there's no exploration of interesting themes, etc. They're entertaining, relaxing, fun, but I don't think that reading them is any better than watching something good on TV. If a book, or a TV programme for that matter, inspires people to learn more about something then that's clearly a good thing, but many people read bad books uncritically, and I will never be convinced that that is a valuable activity.
I suspect this is a topic on which people are likely to have serious and divisive disagreements, and I'm not really expressing my opinion very effectively, so I think I'll bow out before people really start hating me