Go-based software is smaller, faster, easier to deploy, easier to update, easier to contribute to.
I find that the installation footprint of a Go-based service is usually in the 10s of megabytes or less, where the installation footprint of pretty much anything else starts in the hundreds of megabytes.
In the classic world of one or two servers for a small company, sure, the disk space is meaningless, but with containerized workloads, small images are great for quick deploy, and quick iteration.