"Conservatives see Liberals as:
Gun-hating, tax-raising, America-hating, UN-loving, handout-giving, anti-Christian, hypocrtitical hippies who are all closet-socialists and likely on some sort of illegal substance."

Let's see...gun-hating...tax-raising...UN-loving...handout-giving...anti-Christian... For the most part, those are true of the majority of liberals and Democratic voters. Of these I picked out, what have liberals done to dispel those stereotypes upon them? As for the rest of your post, you make the assumption that nobody is open to even hear any other ideas/ideals, which is incorrect.
Not exactly. I'm basing partially on chatrooms. and for the most part at least in the yahoo general politics chatroom, saying something liberal will put you on the ignore list of any conservative in the room. Or saying something conservative puts you on the liberal ignore list. even for those who don't ignore a person of the opposite persuasion, there isn't much of a "discussion". It's mostly name calling. In fact several of the conservatives in general yahoo chat greet the room with phrases like "hello Americans ... and liberals". Now I'll grant you that internet chat isn't the same thing as talking to your buddies about politics, but I don't really do that much. Most of my buddies are not interested in politics.