Funny, I once asked the same question about pure mathematics, and got similar answers. In the end I decided pure math wasn't the best bang for buck in terms of benefit to humanity, and decided to work on other things. When it comes to Haskell, there is a big problem that the people best qualified to speak on the matter have invested a lot of time in Haskell, and therefore are subject to biases associated with their i…
As far as what I have learned and how I have been studying, I did try "Learn You a Haskell" but found its explanations inadequate and sometimes confusing. Searching the web, I find a number of people feeling the same. Meanwhile, I find a large number of people agreeing with your experience the text is the best introduction. I think the fact the supposed best text is utterly failing a sizable number of people also suggests how worthwhile Haskell might be.