Yes, but 25 years ago, and my only regret is not being mature enough then to take the flying as seriously as I should have done. It's still an important and formative feature of my life now however - and many other people's as evidenced by the incredibly interesting cross-section of aviation that attended the last UAS reunion I went to.
Nowadays it's moved away from the flying with a lot less hours, but more towards adventurous and officer training.
None of which changes my opinion that anybody who is lucky enough to have the option to be in a UAS, would be a fool not to fully participate.
But, as PHF said very clearly - they will decide if you're a member, not you. You can only apply and do your best.