Building and gluing to crash proof as suggested is a waste of time and only hinders the performance of an airplane IMO... We build to fly. The proper choice of airframe materials, adhesives, and a properly designed structure that includes proper bond lines is what is needed.

Personally I only use thin and medium CA on all my wood airframe structures including firewalls and landing gear blocks, I do use thin laminating epoxy on my sheeted foam wings and tail feathers though. There are many really great adhesives out there, most are much stronger than the materials that make up our airframes, so again bond lines are key.

Bob