I think that the example of a military sailing vessel (!) shows that almost everything people build with their hands has a limited life-span, too. In many case

I think that the example of a military sailing vessel (!) shows that almost everything people build with their hands has a limited life-span, too. In many cases the lifespan is longer, but in other cases it's shorter. My malloc() is older than my car, even though they both still get regularly used.