Sure it is. learning any language is very useful. As it gives you knowlege and gives you the ability to communicate with people from other countries.

To be or not to be,that's a big problem. Yes or No,another big one. I think,to find the answer for your question is less important,compared to learning Chinese.Only when you have learned quite a lot about it can you find a satisfied answer.In other words---before you have had(mastered)it,you are not eligible to ask this question.^_^ Master it,then no matter it's useful or not,you have already had it-----it will help you when neccessary.You will find the answer then. Know Jay Chau?It's said that someday may come when our foreigners are asked to have a Chinese Test,using Jay Chau's songs for listening comprehension and Classical Chinese reading comprehension.haha.It will be a good news~~ha. Come on.Just do it.You will feel proud of yourself then!