Why all the rust?

["Radley, Jack" <JackR@SHRIVERCO.COM>]

I am new to the TR6 world, but the one thing I have learned with
certainty is that I have to protect my TR6 from rust.  Currently my car
is original and basically in like-new condition.  I have read all the
posts about the rust repair products, but what should I do to protect my
car?

I have a handle on the basics like no salt, avoid rain, keep it clean,
dry, waxed, etc., but why all the rust?

Is the steel in the TR6 overly susceptible to rust or is this all simply
a function of 20+ years of exposure.

Is there more that I should know?