Comment by stinos

If you haven't been thinking deeply about memory management and concurrency, you won't be able to understand, no offense meant

I do think about that, when needed. My point is that these containers can be 'good enough' in places where it doesn't really matter, not that they're always the go-to thing. E.g. I really don't see any issue using a map as part of a configuration type of object which gets read from args or json and which only gets used once at application start.