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GitHub User: lardawge
It's funny, this is the number one argument for justifying the change. However, if you are a working developer and work on different projects, chances are you will HAVE to learn it if the majority of apps use it.
If you look at most rails apps <= 2.3.x that are currently in production, they most certainly use rails standards of the time. e.g. rails 2.3.x apps use prototype. So, I would say just learn it. You may find you like it...