I think somewhere in this sci.space archive of rocketry usenet wonders is a quote along the lines of "Rocket science is just extreme plumbing". Cryogenics with powerful oxidizers is hard!

https://yarchive.net/space/index.html

"All engineering is plumbing - some fields just manage to avoid working on broken sinks & toilets" -anonymous

Even the arts aren't necessarily safe. A story told by the composer Philip Glass in 2011:

> While working, I suddenly heard a noise and looked up to find Robert Hughes, the art critic of Time magazine, staring at me in disbelief. ‘But you’re Philip Glass! What are you doing here?’ It was obvious that I was installing his dishwasher and I told him I would soon be finished. ‘But you are an artist,’ he protested. I explained that I was an artist but that I was sometimes a plumber as well and that he should go away and let me finish.

My day job is plumbing. I really very badly want to be able to make a decent living through the skills I've been practicing outside of my job, and this quote is motivating to me. Thank you! :)