I like the single-binary approach that Nomad (and Consul) uses. Whereas, Kubernetes feels like a complicated web of services and APIs that need to work together. There's also a bunch of choices that need to be made up front when deploying Kubernetes to decide which distribution to use and which components you may or may not need. Kubernetes is a lot more flexible and powerful than Nomad, but Nomad is a lot easier to deploy and manage.