Complexity is tempting because it's easier in the short term.
You don't need to consider the second order effects of your decision or worry about the long term cost of inefficiency. You can just enjoy the solution to your problem today.
But you'll pay the cost later on.
Simplicity, however, requires spending time up front to consider other options. Simple solutions often seem obvious, but they take a longer time to find.
You need to front-load the cost of them, with the understanding that you'll enjoy the benefits for years to come.
When we choose simplicity today, it becomes a gift to our future selves.