It's one thing that copyright/IP is such a matter of debate in the creative world, but a whole new layer is added onto that when people say that it only matters for a certain amount of time. You may have read all those articles a few months ago, the same ones telling us about how Mickey Mouse (technically Steamboat Willy) is now up for grabs 95 years after his creation.
There are those who say "as long as it's popular it shouldn't be pirated", those who say "as long as the creator is around", those who don't apply a set frame, etc. I've even seen people say they wouldn't dare redistribute paleolithic paintings because it was their spark on the world. What philosophy of statutes of limitation make the most sense to you when it comes to creative work?
Frankly, if you're a small creator, copyright already doesn't really exist for you in any meaningful sense: because copyright is enforced through the courts, you only really have rights over your work to the extent you can actually pay the court costs of continually defending your rights again and again and again — and if you have that kind of money to spare you aren't exactly a starving artist.
Your argument has nothing to do with my point of the copyright time limitation being the lifetime of the author.
What do you think the purpose of copyright is?
My argument is about time limitations, not enforceability : l
This is going to sound really tedious, but what I'm trying to get at is this:
To justify that "no more or less than the author's lifetime" is the perfect length of time for copyright to last, you must at the same time justify that "more or less than the author's lifetime" is not the perfect length of time for copyright to last.
The time limitations of "0 seconds" and "until the heat death of the universe" are more and less than the author's lifetime, which means that you must justify why these are not the perfect length of time for copyright, just the same as any finite time limitation.
In other words, in order to justify that the author's lifetime is the perfect length of time for copyright to last, you must first justify both that copyright exists and that it expires. Hence, "What do you think the purpose of copyright is?"
It's from the answer to that question that you come up with criteria to judge time limitations, and it is from those criteria that you decide on an ideal time limitation. On the other hand, without an answer to that question, your beliefs have no actual basis beyond gut feeling.
Likewise, to criticize someone's understanding of the purpose or nature of copyright, is criticizing the criteria used for finding an ideal time limitation, is criticizing the favored time limitation itself. My first reply was then based on an assumption of what I figured you thought the purpose of copyright was.