Pablo Picasso's 1946 work, The Bull, is a series of drawings that get progressively more detailed before reversing course until only a single line remains:
The series is timeless, because it perfectly illustrates the creative process.
I'm using the word "creative" here in a broad sense. Any kind of problem solving, artistic or otherwise, follows this arc. As we become more familiar with the bounds of a problem, we discover how to refine it down to its most important parts.
To find the best solution, we often must first wrestle with the more sophisticated and complicated alternatives before arriving at the simplest answer.
Why are simple solutions better? They're better because they're more likely to last. In contrast, complex solutions are more brittle, because they have more points of failure.
Simple is hard, but it's resilient. And that resilience is your reward for putting in the work to eliminate complexity.