The wear and tear aspect is true. But like you say, it's true as to humans, classical guitars ...but also violins, cellos, lutes, chairs, skyscrapers, dog houses lol..
To say that violins get better with time but classical guitars get worn out is silly. They both experience wear and tear...but they both can still sound nice. Here's a quote from one of my favorite performers, Ulrich Wedemeier:
In the early 1980s, historical informed performance was still in its infancy among guitarists. The erroneous assumption that plucked strings did not mature and improve in sound with time like the bowed strings, but were on the contrary worn out by the strong energy impulse when plucked, was also widely spread. As a result, historical plucked strings were not much sought after by players, and in contrast to violins, there were only few people interested in old guitars.
All this made it easy for me to obtain my first old guitar. With this instrument, a whole world of new experiences opened up. I was considering nineteenth century guitar music less in a retrospective way, but more as having developed from the earlier repertoire of lute and guitar music. The original instrument, historical strings, and a right-hand technique without the use of the fingernails together produced a singular beautiful sound and caused a fascination in me, which in the end reveals itself in this collection.
But hey, if you think your Torres' or Arias' is "dead"...I'll gladly help you out and take it off of your hands!!! Hehe
"One should always eat muffins quite calmly. It is the only way to eat them."