I'm not really sure what you mean by "stuck in IO" but that's a consequence of laziness so it's pretty much unavoidable in FP in general. As for "hard to grasp

I'm not really sure what you mean by "stuck in IO" but that's a consequence of laziness so it's pretty much unavoidable in FP in general. As for "hard to grasp libs," I find them much easier to use than C libraries. They're actually quite well suited to certain domains.