Yes, sometimes you need to use a keyboard to type documents for studying or for work. It is very helpful and quick. Although there's alot of technology now, iPads and tablets; it still helps to learn to touch type cos evenually you will be needing to type documents for work, business or if you become a student and if you do not know how to touch type it will take along time to complete wordprocessing a document.
Recreationally, it is not nesessary but for work and business or studying it helps.