Why should I learn to learn?

Having spend a yet another day without as much as stopping before dropping I've decided that instead of summarising an article as I meant to I'll ramble something here. It's not as good idea as the article thing, but it's 6 hours 'till I have to wake up. Something has to give.
So today the question is why to learn to learn? I mean isn't it good enough to learn something - aren't we naturally good learners as humans? Answer is that yes - we do actually learn pretty well implicitly and it is not entirely clear that we learn better directedly than when learning implicitly. Still... sometimes it is better to learn something very spesific as not every skill is equally useful and compound interest from learning to learn can outweight temporary set-backs even if purposeful learning is not as efficient as implicit learning. If it is possible to become better learner that is.
So if we can learn to learn and we can learn to generalise our learned ability to learn to general context we are just a lot better off than if we just had learned a yet another set of facts.
We could have learned implicitly some facts about our learning capacity through learning something else purposefully, but true limits and non-obvious facts about our learning would not have become apparent to us. It is only through learning theory and practise we come close to what we can truly be.