I would argue that Oak framing is the most beautiful construction technique known to man, of course I am biassed, but after all these years working with Oak the beauty of our work stops me in my tracks most days. This is the most obvious benefit, but Oak has so much more to offer.
Durability, if you are truly concerned about our relationship with our planet you should plan to build something that can last for hundreds of years. This is the only way we can reduce our over consumption of materials. There are many examples of Oak frames in Britain which are over 800 years old. If you build in British Oak you can carve your name on it somewhere, this is as close as most of us can get to immortality.