Edit: tell me this doesn’t sound stupid
There is only two types of jobs:
Doing something someone else doesn’t want to do
Or
Doing something a specific other person can’t do
The only thing I can think of that someone other than myself can’t do is piss my wife off to no end. Not really a job, tho.
I worked as an Outsource Manager at a couple of game companies (in addition to working for many years as a game artist). I outsourced mostly art asset creation, mostly to cheaper countries. It was kind of bittersweet, since it was clear to me and the artists at our studio that we were outsourcing really enjoyable work, work that our internal artists would rather have done than spend some of their time reviewing the cool art stuff these outsource artists created. But doing this allowed the studio to make a bigger, better game than our limited size team could do on their own.
So basically, I disagree with your premise. There are many sorts of jobs, for many reasons.
Why didn’t you do it for free? Why didn’t the outsourcers do it for free?
Living costs money. Biggest reason for people to work.