Unfortunately, the naysaying on HN is getting to the point where I read the first comment (usually someone bitching and/or disagreeing) and get fed up and leave.
I understand you completely, so nowadays I try reading the second and third comments before leaving. Sometimes the very good comments end up buried in a mess; we might need a way to highlight those with a lot of votes somehow.
I wouldn't get too upset over dissenting opinions, that's partly what makes for great conversation here!