Why do Obama, and Gore, and Kerry supporters sound so Bitter?

Liberals felt the election has been stolen in the last two elections. They believe that the Liberal agenda is way things should be. Their opinion is the right way to think. If you disagree with them you are not smart enough to understand the world and things that need to be corrected, so they have to tell what to think. Or you are against helping all the wrongs in the structure of society, have all those less fortunate be given equal status through the use of entitlements and big government run programs. Remember the Liberals believe in freedom of speech, just as long as you don't disagree with theirs. Example; the proposed fairness doctrine, need I say more.