> taking your argument to the extreme, we all probably should've stuck with PHP, since everyone understood it and, well, was it really worth the switching cost?

There are multiple paths for honing a new technology, without dumping it on a large group of developers while it's in its experimental stages:

- Use it for a series of side-projects

- Use it in a startup or startup-like team in which all the developers are bought into it, and happy to work through the obstacles

- Use it at an organization that's both able and willing to devote a large amount of resources to making it work (e.g. devoting a full-time team to its development & support & related training)

Once the kinks have been sufficiently worked out in one of those contexts, and a solid ecosystem with good documentation exists, then there's a much better chance that the benefits will be worth the switching costs for the average project.