Symfony2 when listeners are preferable than services?

Question

I know, that in most cases services preferable, because they are initiated directly at the call site and this approach making code more clear.

While harder to reason, wh

Answer 1

Listeners make sense when you create a reusable bundle/component that should not be modified by its clients but still be extensible.

Listeners don't make much sense for application code because they add a level of indirection that makes it harder to figure out what's going on.