...Why 'use' AW? I am not sure that I 'use' it. From my perspective, this implies that the communication and benefit is one way and one-sided.
No.
AW first and foremost provides interaction, helping overcome isolation, one of the biggest drawbacks in this type of existence* (as others have expressed).It is not for nothing this section is termed the 'Water Cooler'.
In the process, I have been treated to a good laugh at least once a week (two to three signifies a very good week!), and along the way, have contributed to some of the discussions, of which some have been very lively. There's the intellectual element in some of these that helps prevent me from losing my 'edge'. Some have even chosen to indicate privately that they have read and agreed with what I've said; some have done the opposite. There's also the help gained via the Tech forum, one of my regular visits, and to learn in other forums of interest.
* I was reminded of a quote by Norman Mailer. When asked about what he thought about the writer's lifestyle, he replied that "writers don't have 'lifestyles'-they just sit in their rooms and write." This had some resonance even for me, a 'mere' article writer (full-time).