Death of a /6

So what do you all think it is about the /6 that makes it so good? I mean if they built all engines like this one the body would rust off the running drivetrain. Is it the casting, the general design, or what. Seems these engines will take about any abuse you throw at them and keep running. I just sold a 93 caravan with a 3.3 and 305K on it. Ran fine and didn't use oil. Wouldn't plan on it running a whole lot longer that way but a /6 sounds like it would just be breaking in based on some of the stories so far. What's the most common part to wear out first? If you could get the hp from a /6 you could get from a BB hemi, which would you choose?