I actually already fly warbirds, and am working on my FAST card (airshow formation qualification), but that's just burning avgas for the sake of burning avgas.
Sure it's fun, sure it's challenging, but there's no mission, no greater purpose. I just feel like a wannabe, and let's be real, there's nothing more pathetic than a wannabe. Same with the major job. Yes, it's financially wonderful, but there's no camaraderie, no particular challenge at this point, just time to get senior and fat.
Stuck doing just that for the next 40 years and knowing I left a stone unturned (enlisting) would, at the risk of being melodramatic, haunt me for the rest of my life.
Thanks.