Simple writing lasts better
‘Simple writing also lasts better. People reading your stuff in the future will be in much the same position as people from other countries reading it today. The culture and the language will have changed. It’s not vain to care about that, any more than it’s vain for a woodworker to build a chair to last.’
This is also true about code. Writing simple, understandable code makes it easier to read for a future you or a current someone.