As others are sure to point out: welding bad for health.
UV radiation that will give you a near-instant sunburn. Combined with IR radiation that will literally burn your retinas if you don't protect them properly.
Then theres the fact that you're dealing with upwards of 1200°C/2200°F molten steel. And depending on your process you also have argon/CO2 gas leaks to worry about. That or the flux fumes or vaporized oxides and various metals will get you.
But welding is also fun as shit, and surprisingly accessible as long as you're not doing structural stuff without proper training.
Before too much longer, I figure pro welders will be using advanced VR and motion capture technology to remote-control welding robots. No need to protect your skin, eyes, and lungs, since you're not even near the physical welding. Also, the robot would literally have the welding equipment attached to its arms, so you'd be working as if you're just pointing and gesturing.
I'm basically describing the "Waldo" concept of remote manipulators, from Robert Heinlein's work. Look it up. The full capacity of that vision is becoming more and more possible.
I mean, Heinlein was an insane dickhead, on a personal and political level, but whattayagonnado.
I did welding for about 4 years and I actually kind of miss it. I've thought about just getting a welding setup to do it for funsies, but I don't know that I really have anything that I could even weld with it apart from random junk, plus I really don't think I have the space for it and would be afraid of catching my house on fire