[Acconut]

> I've done lots of event loops in the past (eg hellepoll in c++) and think that the cost of that is on the programmer - keeping track of things, callbacks, state machines and things and avoiding using the stack for state etc is all hard work and easy to mess up.

I very much agree. In the past, I have had quite some fun developing a few streaming parsers using Node.js, which also uses an event loop. And while these parser worked relatively good and efficient, debugging them was not an easy task. In addition, understanding the code is also a though challenge, especially for people other than the original authors.

When I started using Go more and more, I really enjoyed the different I/O-model using goroutines and blocking function calls. It also has a few drawbacks but the mental model is a lot easier to reason about.