Actually, they are.
In his remarkable book The Righteous Mind: Why Good People are Divided by Politics and Religion, Haidt recalls a telling experiment. He and his colleagues Brian Nosek and Jesse Graham sought to discover how well conservative and what Haidt terms ‘liberal’ (ie: progressive) students understood one another by having them answer moral questions as they thought their political opponents would answer them. “The results were clear and consistent,” remarks Haidt. “In all analyses, conservatives were more accurate than liberals.” Asked to think the way a liberal thinks, conservatives answered moral questions just as the liberal would answer them, but liberal students were unable to do the reverse. Rather, they seemed to put moral ideas into the mouths of conservatives that they don’t hold. To put it bluntly, Haidt and his colleagues found that progressives don’t understand conservatives the way conservatives understand progressives. This he calls the ‘conservative advantage,’ and it goes a long way in explaining the different ways each side deals with opinions unlike their own. People get angry at what they don’t understand, and an all-progressive education ensures that they don’t understand.
Haidt’s research echoes arguments made by Thomas Sowell in A Conflict of Visions and Steven Pinker in The Blank Slate. Both Sowell and Pinker contend that conservatives see an unfortunate world of moral trade-offs in which every moral judgment comes with costs that must be properly balanced. Progressives, on the other hand, seem to be blind to, or in denial about, these trade-offs, whether economic and social; theirs is a utopian or unconstrained vision, in which every moral grievance must be immediately extinguished until we have perfected society. This is why conservatives don’t tend to express the same emotional hostility as the Left; a deeper grasp of the world’s complexity has the effect of encouraging intellectual humility. The conservative hears the progressive’s latest demands and says, “I can see how you might come to that conclusion, but I think you’ve overlooked the following…” In contrast, the progressive hears the conservative and thinks, “I have no idea why you would believe that. You’re probably a racist.”--quoting Matthew Blackwell at Dreher's column
So yah. You ARE the reasonable one in the room. Sadly, it's likely that it will remain that way forever; Leftism appears to be incurable.