One reason snitches seem so much more despicable than the average seedy sider comes from the fact that they usually fall into 2 categories. Either they A) are too weak-willed to stand up for themselves while threatened, thus easily convinced to give up information (IE, they're grossly pathetic) or B) they are completely and absolutely impossible to trust in any situation whatsoever, no matter who you are. Both of these traits - on the surface at least - represent a form of selfishness that the average reader just can't abide. It's one thing to do stuff entirely for money, without thought for morality, and even backstabbing is allowable so long as there is a good or at least clever reason for it. But snitching requires taking a friendship and throwing it away for money, so's that someone else can do the backstabbing. There is very little glory in that. In fact, some would say it's downright cowardly. At least Lando involved himself in the setup, and had the steel to look Han in the face as it happened. A snitch is more like the mysterious Imperial who told the Bothan spy where the second Death Star was located. We'll never know who it was, and frankly, we don't want to know. You don't honor him because he did nothing honorable: he didn't put himself in any real danger, he was probably paid for it, and in the end, you know he'd do the same against you given the chance. In fact, he probably did. Those Bothans had to die somehow, right? But through it all, the snitch never chased anyone down, never fought for his life, never pulled a trigger, never held his ground against all odds...or even a few odds. All he did was make a simple choice that shattered the trust between him, and the people who trusted him most. It would be really hard to sympathize with that. REALLY hard.