I guess that's fine so long as you're covered by the standard library and/or are willing to reimplement a lot of stuff yourself, but that's a significant trade-off you're asking.
It sounds defensive but Go stdlib is all you need. I believe I'm qualified to say that as last year I challenged myself to only use stdlib, out of several languages I used over the course of the year on big projects, Go was painless and that was a unique experience. So far this year I haven't seen much need to add libraries to my work because everything is already within grasp.
