[brigandish]

Are you saying it's a primary feature for Rails or for Ruby? I can't think of an example where it's a primary feature for a user of Rails but I usually avoid it in favour of better tools so I might not know of them. Perhaps you know of some?

[sourdoughness]

Rails leans on meta programming for a lot of its magic (though less so than it used to in early versions). You don’t generally use it as a user of Rails, though.

[brigandish]

Then I don't see how they're any better than macros in that situation.