Until you write a post that ends up on the front page of HN and it brings your server down. The chances of that happening are small, so it's probably not worth

Until you write a post that ends up on the front page of HN and it brings your server down. The chances of that happening are small, so it's probably not worth optimizing a dynamic site for that use case, but with a static site you don't have to do any additional work or introduce complexity.