punch cards were just the in/out method used at the time. Today we have keyboards mice and monitors but they essentially serve the same purpose. The skill of punching cards was not how to physically punch the cards, it was knowing what information to punch in and what the output represented. All of which is still relevant today, even though we no longer use cards.  Your analogy to speaking spanish is a bit silly, because unless you live in a spanish country that skill is not going to be useful, whereas computers are ubiquitous, they are everywhere, knowing how to use them will never be useless.