Do you have any use for it in what you plan to do? is it going to aid you in any way in what you currently do or plan to do? those are the two questions you should ask yourself, the answer to those is the answer to your question.
In a more general sense, yes, I'd say in my opinion is well worth learning asm (something like x86 or arm), how well it serves you depends on what you programming and how your debugging it.
