Ofcourse, interesting point you have brought up, but I don’t entirely agree.
We don’t see the person’s inner struggle, how many times a person overcomes temptation, rises above evil.
It’s true, each generation sinks lower into tumah than the one before, but that’s the price of galus. Obviously, the public will only publish stories that interest the readers, meaning the disgusting and devastating ones. Our world is definitely a crazy world. But don’t underestimate the goodness, that seems to be hidden. Goodness has tznius, so it seems to us that the bad overpowers it- but it’s there!