[pron]

> You can do that with Akka as well, I've done that, I don't see the problem there.

The problem is that your (JAX-RS) endpoint will then not scale as much as your business logic.

> People should write asynchronous code throughout the entire call-stack

Ah, but why? Forget for a second about Quasar and its current implementation. Why on god's green earth should people ever consider writing asynchronous code? Correct me if I'm wrong, but the only answer to that is "to avoid blocking threads, which is expensive". If you had a way to make blocking threads inexpensive and therefore not have to write asynchronous code, wouldn't that be better (even if you think async code is not hard)?