Why do people from both parties keep talking as if their own party was filled with nothing but perfect saints?

Get rid of career politicians. Term limits for all.

Too busy bickering to realize anything

No shit. The point is to find a party of corrupt self-serving liars whose interests align most closely with the public good. Make them satisfy our needs to get the rewards of power they're really after. No country has ever figured out how to screen their statesmen for humility and altruism and I suspect it's mathematically impossible to create such a system.

"The point is to find a party of corrupt self-serving liars whose interests align most closely with the public good."

Sounds like trying to decide whether the fox or the coyote is a better choice to guard the henhouse. Even if it made sense, it's beside the point.

The point is people should have the sense and integrity -- not to mention the humility -- to admit the heroes of their own camp aren't perfect and quit trying to rationalize away their moral failures. So long as Camp A won't tolerate a word spoken against Camp A's heroes, and Camp B does the same, the heroes of each camp get to continue their self-serving corruption & lies unimpeded.

It'd be a VERY different story if Camp A called its heroes to account for their moral failures, and Camp B did likewise. Then (and maybe only then), the heroes would feel the pressure to clean up their acts.

They’re too busy Nut Picking the faults of the other party so they can stick their chests out and act like they’re better than you.

If you’re trying to figure out which party I’m talking about, it’s BOTH of them.