Join the Military
GA and Cadet schemes are not the only way to get into flying !!!!
Join the military - I guarantee the flying part will be a lot more fun than the previous two put together. You can always join the Airlines when you are 40. By then they will probably have raised the retirement age to 70, so you will still have a good 30 years to sit and observe the automated flight.
On top of that you will actually know how you will react under real pressure (And No, you will never be able to create that feeling in a SIM)
I have absolutely loved every day I went to work in the Air Force.