Why (in my theater days) I was audio tech, not lights...
Almost no ladder work. When STAGES moved from Anaheim to Fullerton I had to do ladder work to install my system. When Insurgo opened I had to do ladder work to install my system. In both cases I had to hang and cable up four measly speakers. When I worked with Vanguard, someone else had installed the audio grid, but I had to re-run the speaker cables because they had been run across the light grid and we had bad 60Hz hum. At the Muckenthaler they didn't want me to hang speakers. Stacks on the ground. That's all the ladder work I did for a decade.
It's the lighting guys who had to ladder up to hang, rehang and refocus on every show.
Also, as audio designer I could build my entire design either at home, or, a couple of times, during the tech designer run through. Not hours and hours of late night hangs...
But, really, I hate ladder work.
Oddly enough I never cared when I had to climb truss or scaffold. It's just ladders I hate.
Also, I was the best damn audio designer in Orange County. I always got good reviews. Audio design NEVER gets reviews... Ah, that production of "Cat on a Hot Tin Roof" where my design got a two paragraph rave and the Maggie got one sentence... She was literally screaming about it backstage...
I don't miss it.