Readability for yourself. I find the biggest issue with lots of LLM assisted development is that the agent harness can generate code faster than I can read it. I'm the bottleneck.

There's a "zen" moment felt by folks who've written lots of macros (experienced in Lisps and Forths) where, when designed properly, you really feel like you've "grown" a language and have really walked up the abstraction ladder. My thesis is that macro heavy code when the author designs the macros well are very readable. That an agent's output when stacked upon macros can be a lot simpler to read and understand than in languages where the syntax is less fungible. And if you leave a project for a while and come back, an agent is a perfect tool to help you read your macros and familiarize yourself with the abstraction surface again.

Just a theory though.