Programming

I first worked in construction, then I worked in electrical engineering, now I do software, and there's things about software that I find inherently dissatisfying. There's little physical movement or location variety, your code is published quickly but often deleted quickly, there's little interaction with coworkers outside of your very specific domain, and the entire field of software has more money than they actually deserve to have based on how hard they work or actual value your code provides to society. Some companies produce very necessary products that do very necessary things for all of society to function, most of the software jobs are instead working on bullshit marketing apps that waste people's time or just enrich some financial services company or other societal middle man that doesn't actually need to be any better or richer.

The main upsides are the immediate return (some buildings take like a decade to build, most code is published that month), the remote work / hours flexibility, and the aforementioned undeserved pay and benefits.