I'm 29 and applying for a commission, one of the reasons being I have learnt in the "real world" that money isn't everything, I'm happy to take a huge pay drop to join the Service and be on the slow track to promotion to join a community where regular job changes and deployments make you a competent individual in all aspects of life.
One question though, why would you have a steeper learning curve as someone who is older than a university leaver? The RAuxAF must have solved the problem whatever it is?