I do not regret learning Haskell and believe doing so was a worthwhile exercise. What I'm saying is that the number of jobs out there calling for Haskell, OCaml, etc. is so small that it is not reasonable to plan on being able to use such languages professionally.

There are many more programmers that would love to write Haskell for a living than there are job openings for Haskell developers. I have a strong dislike for programming in Java. But it pays the mortgage, so feh.