a pilot question

Hi all,

I'm a pilot. I mean for real. Like certificated. My question is, why
aren't sims worth a damn? They're cheezy and crappy. The flight models
are wrong. The radio equipment doesn't work right. The terrain isn't
photorealistic and I can't pull negative Gs. You can't do pilotage.
The dead reckoning doesn't match up with real charts. What's wrong
with those computer programming geek f0ks? Can't they get anything
right?

When will I be able to learn something from a sim?