Why do you hold the assumption that code can be made much simpler than it is?
I've done many years of programming and wrote some bigger programs from scratch by myself. Almost always the actual code is far more complicated than one would assume it should be. And it's not because it's of low quality. It happens that writing something nontrivial that works in the real world requires all the details, checks and abstractions it contains.
If you were in school recently, maybe you were lead to think that programming is an extension of math, where everything is pure, simple and provable. But it isn't - programming is much messier.
I've done many years of programming and wrote some bigger programs from scratch by myself. Almost always the actual code is far more complicated than one would assume it should be. And it's not because it's of low quality. It happens that writing something nontrivial that works in the real world requires all the details, checks and abstractions it contains.
If you were in school recently, maybe you were lead to think that programming is an extension of math, where everything is pure, simple and provable. But it isn't - programming is much messier.