I've played Factorio in the past and am playing Satisfactorio right now. I generally don't code at home or have any side projects.
Let's do some introspection as to why I prefer playing these games over coding at work:
1. Games are designed in a way, that speaks to intrinsic human values. For instance, in Factorio, the local Fauna wants to kill me. I have to build and design my base accordingly or will I'll perish. My work in contrast, is far removed from intrinsic human values.
2. Games are designed to be accessible, with every step yielding rewards right away.
2.1. Coding in an enterprise environment is full of complex task, which have to be broken down first.
2.2. Games such as Factorio increase complexity of task later on, but you always utilize mechanics you've already mastered.
2.3. Task in enterprise environments tend to always require learning new knowledge first (business domain, existing code base etc.) before being able to solve it.
2.4. Games allow me to start from scratch. Existing code bases, which I didn't build myself, require me to invest quit some time before I can even start achieving my task.
2.5. Often, these existing code bases require me to learn new frameworks. Games teach new skills/tools in seconds or minutes. Frameworks tend to require hours or days to digest.
3. Games provide visual feedback. My labor results in visible feedback inside the (virtual) world. Accomplishing a coding task tends to not result in any feedback (I do mostly backend). If there is feedback, it's normally in text form and of negative format (error logs).
4. In general, feedback in games is unambiguous, clearly tells you what is happening. No debugging. No frustration.
When I actually know everything that is required to solve a task and can concentrate on achieving the task in the best way, that's the moment I'm having fun. But normally, there is so much I don't know, tools I can use but have not mastered, that it feels like a mess. Even if you believe you have everything, reality tends throw some roadblocks along the way.
Now, why don't I code at home and do side projects?
That's in my first point. There is just nothing I could use coding for that solves problems I care about (intrinsic human goals). Even if I know how to write the next Facebook, I wouldn't do it because I really don't care. Well, there are some code solvable things I consider interesting, but they are out of scope in terms of my resources and abilities. Also, the way along would properly still suck for the most part, once it gets serious.
Right now, I'm learning some Math in my free time. Quit enjoyable, gives me new insights in how everything works. I tend not to have that feeling why learning new frameworks / programming languages. New insights are pleasurable to me, tech stuff just doesn't tell me anything interesting about the world.
Maybe some of you who don't feel the same can understand people like me a bit better (not saying that all non side project people have the same reasons).