It's personal tastes perhaps, but I don't find the appeal of packages management in Golang. I find PIP, NPM, RubyGems, Nuget, Cargo,… easier to work with. The go.mod syntax is what it is, and doing updates or fixing conflicts isn't easy.
Not having a registry is neat, but I'm also unsure of what is going to happen over time as dependencies may be moved or removed. You can see that with old Maven pom.xml where some dependencies do not resolve anymore.
