None wrote:As to the comic, I suspect it is indeed natural for males to be attracted to breasts, because I mean come on they are after all a sexual display.
What do you mean? They're on display because they stick out from the body? So do penises and testicles, but those aren't considered sexually attractive the way breasts are. I don't think it's unreasonable to think about the ways that culture influences what we learn to find sexually titillating.
Personally, I got a chuckle out of the comic (which is rather obviously taking a shot at feminists), although I thought it oversimplified both feminists and science, and by implication it gave science denialists too much credit. There's a different between denying physical realities that science demonstrates (e.g., evolution -- which has been shown to actually physically occur in observed tests -- or climate change, again, a physical reality that tests consistently point to) and differing over the reasons for emotional/mental reactions by human beings (these things can't really be studied in test settings as any 100% reliable test would violate ethics rules -- human reactions are so infinitely complex that trying to explain them requires controlling for variables it's unethical to control). And there aren't too many feminists who argue that there's no physical component to sexual attraction -- most tend to argue something along the lines, rather, that society emphasizes some forms of sexual expression and attraction over others, and denigrates those that don't fall into the dominant paradigm. So, someone who finds penises sexually attractive doesn't fit with the dominant paradigm, and therefore attraction to penises isn't widely acknowledged as something normal or common. Conversely, it's completely socially acceptable to talk about the sexual attractiveness of breasts, and people are presumed to be attracted to breasts even if they aren't.
To be fair, thanks to the sexual revolution and the broadening acceptance of straight women's and gay men's sexuality, these trends are slowly changing.