Glory
You work with your hands. You build things. Where there were once steel beams there's now a building. A bunch of metal plates have become an awesome, giant tank.
Welders are part of the infrastructural backbone of the country. They go everywhere. They build everything. They leave their glorious track marks behind all over the place.
That's not to say that every day spent as a welder feels like winning a marathon. Mostly it's hot—really hot—the hours are long, and they're spent moving really big pieces of metal so that they can melt onto other metal. But there's pride, variation, and an inarguable sense of accomplishment that goes along with the trade.
It's manual labor, but it's highly skilled and there's endless opportunity for self-improvement. When you work at a McDonalds, it takes about two months to master flipping burgers, and then you're done. You've figured it out. In welding, there is always a new skill or technique to master.
You'll grow, you'll become more precise, you'll build real, tangible things, and that's something to feel good about.