It's a wonderful skill to have.  My grandmother used to do all those types of things--crocheting, knitting, etc.  She made beautiful items and gave them to all her children and grandchildren.  I still have fond memories of her sitting in front of the TV, and knitting or crocheting. 
(When I was about 10 years old, she tried to teach me knitting, and I didn't have the patience for it and wanted to scream!  

  I kept knitting and then pulling out all my mistakes--finally decided this was for the birds.  

)  I wouldn't be adverse to trying it again, though, as an adult, but I don't know anyone now who does either knitting or crocheting.