Well... when I asked the question, I wasn't sure to expect (thus, I asked it). I have an aluminum frame that I ride on that I bought that had about 10,000 miles already on it when I bought it. It's still in pretty good shape and I take good care of it. Really was just trying to get a feel for how long I should expect it to last. It sounds like it can depend more on craftsmanship than material.

Also, it feels a little weird that you're asking me what I think of this discussion...

Just sayin...