You spent more than 3 person-years migrating twenty services from one container orchestration system to another and you think it was worth it? Not sure that seems worth it to me...
If you're determined to be skeptical of the value-add from Kubernetes, my random post on HN ain't gonna convince you :) The developer experience improvement is obvious to people actually interacting with K8s.
I do want to clarify that this isn't the only thing we accomplished in the past year. Just the thing we shipped that was our biggest priority and had (by far) the biggest impact.