There are a LOT of air shows where military airplanes are a small or zero component.
I'm totally in agreement that armed forces are there for reasons you described. But an "air show" is a massive and sometimes separate Venn diagram. There are air shows where main thing is thousands of private airplanes coming from across the country to be together and meet up and have fun.
Put it other way, if armed forces decided it's not worth the recruitment investment and pulled out, air shows would still happen :). For most sizes air shows, the biplane aerobatic stunt done by a crazy local 50 year old real estate agent, is way more fun than the c5 galaxy transporter showing "short takeoff" :-)
Yah.. the roaring sound and precision of military aerial display teams can't be denied, and are an awesome experience. But it's something you see someone doing in a Pitts or Extra or maybe even a Citabria or 150 that makes you question your understanding of the laws of physics :D
It is not the same. Having a jet do a low pass is something that you will remember for a long time. Or having it go vertical with full after burners, especially close to sunset where you can see it better.
The other factor is showing how good you are: sure, you can do formation flying in an Extra 300 or a C150, but doing it in a fighter jet show precission and skill, because it will not forgive you as easy as a slower moving plane.
> It is not the same.
I have seen so many military display teams. Yes, I like the roar. But they blur together.
> sure, you can do formation flying in an Extra 300 or a C150,
But that's not what we watch Extra 330s do. We watch them do other things that are nuts that are also not so easily forgiven. I have fond memories of seeing Patty Wagstaff, Sean Tucker, and Rob Holland (rip). (And before that, Amelia Reid in her 150...)