I have owned both. I now will always go with aluminum.
There is absolutely nothing wrong with wood frame as long as there are never any leaks to cause damage to the wood.
With an aluminum frame water is not going to cause damage to the frame. It might cause delimitation and damage to the wood inside however.
With proper maintenance and no leaks, both construction methods are certainly acceptable.
It really is a matter of personal preference. Just like Chevy vs Ford. They are both good, just a matter on what you like.
Our Rig:
2005 Dodge 3500 - Dually- Cummins
2006 Outback 27 RSDS
We also have with us two rescue dogs. A Chihuahua mix & a Catahoula mix.
"I did not get to this advanced age because I am stupid."
Full time since June 2006