[knucklesandwich]

You'd have a point if the default with Go was a good choice. In practice its not. It's a terrible choice that gives you no ability to use multiple versions of a package (across projects), control a project's dependency's versions, vendor a dependency or build from your system build directory on a case by case basis, etc.

The entire build chain with Go is probably one of the most frustratingly limited build tools I've ever used, which is probably why nearly every Go developer I've met has switched to using one of the third party options.