Been coding since I was a kid, MSc computer science, into programming languages (https://www.firefly-lang.org/).

We tried a few agentic coding tools at work, but they didn't really help.

Along came a project that required us to build a custom harness. One day we added some very basic coding tools to the harness at a whim, and it just immediately (and surprisingly) blew away everything we'd tried.

Now we do most coding through that, and it's a clear productivity boost (2x?). It still requires hand holding and review, and some amount of manual fixing.

But being able to build things much faster is a lot of fun.