It's the letter of the law: media shifting is legal in some places where downloading a copy from an unofficial site is not. Also, there are people out there who would not have the first idea where to look for an existing rip.
I run it in a podman container, passing my BluRay drive though. It rips automatically, and attempts to even lookup the metadata for the disk to file it properly. It's not perfect, but it does work quite well. The only issue I have with it is it does a poor job on TV shows, but I've found nothing better, so it is good enough for me.
I'm old enough to remember people lying that compact discs were practically indestructible.
I think the early rounds of those trying to get people to switch to the format were motivated by the fact that tapes were easily recordable by everyone.
Disk rot usually happens when air gets in contact with the reflective coating and oxidises it. With CD's, it's actually the top side you need to be worried about, as it's right there under a thin lacquer coating. Any ding to that can expose the layer or just literally chip off a chunk of data.
At least on DVD's it's sandwiched inside the disk, so usually the only reason is a manufacturing error, and not really something the user can cause.
And I have PDO pressings of Faith No More albums that are almost 40 years old and have just started to rot. Common occurrence with PDO pressings apparently; one manufacturing error is all it takes.
A couple years ago I made a big project to rip all my DVDs.
Out of several hundred movies only 6 were unplayable. There didn't seem to be a pattern to it either; age of the disc, wear or handling, big budget then current release or old movie slapped onto a disc in one of those cheap cardboard sleeves.
Out of my collection of TV shows on DVD, easily a quarter of the discs failed, and if one disc in a season of a show didn't work most of them probably wouldn't. Many had visible blotch marks in them. I figure they probably used a cheaper manufacturing process for TV shows where they were selling 3 to 6 discs rather than one, maybe two discs with a single movie on it.
This happened to about five of my 360 games. I was so disappointed when I set it up after YEARS and went to play old favorites and the discs were rotted..