PookaMustard: Assuming your hardware works though all should be fine or you can just rely on emulators (PPSSPP for PSP, DuckStation for PS1, PCSX2 for PS2, RPCS3 for PS3, Vita3K for Vita), it's not all dead-ends. PS1 CD-ROMs may be subject to disc rot and I think you could avoid it if you take care of your discs, DVDs will last longer and BDs have a protective layer that means you'd have to actually try to damage a disc yourself.
Are you talking about PC emulators or hardware replacement emulators?
In my admittedly limited experience, PC emulators don't work that great.
Disc rot is usually due to how the disc was manufactured (metal used etc), and not usually how you personally treat them, unless you leave them out in the Sun, which can cause a similar state I believe. Environment can probably play a factor though.
Discs, whether CD, DVD or Blu-ray are all over the shop when it comes to how well they behave, with the burner playing a major part, and they often suffer from variables too. I've burnt a lot of discs over the years, and been disappointed by many of them, and optical drives, even though I was anal about burning speed, compared to several friends who had many more coasters than me. I am no longer big on trusting burnt discs, though my best luck has been with re-writable DVDs ... only burnt to once each though, and not in sessions.
PookaMustard: All of that is certainly true. But in my experience, most of the time you just need a No CD crack. Some game communities may straight up recommend you use a specific No CD crack, see GTA SA and its community recommending the one by Hoodlum. It's not ideal but the alternative is ROCKSTAR LAUNCHER-
I'm not sure how you are just getting by with only the No CD crack.
Perhaps you are just talking about those games that install fully, never needing to access the disc again.
In my experience, you also often need to either create a virtual drive copy of the disc or burn such with decent cloning software, and manage to incorporate that crack (EXE) in the resulting disc. It will be a bit simpler if the original disc isn't encrypted.
Admittedly my experience is mostly based on a no whirring physical disc scenario, provided by virtual discs.
PookaMustard: It may be better buuut you'd have to have the know-how. How do you print art on a disc so it isn't just a shiny disc with "TES IV Oblivion Backup" written in marker? How do you get a good quality scan of a box art and find a place to properly print it at the best quality? What about the manual? An official physical copy does not need any prepwork.
Quite easy with the right software and white blank discs created for just that purpose, by the likes of Verbatim etc.
Sourcing good enough quality images may be a bit tricky at times, though you might be surprised by what is out there on the web. You'd probably need to use a bit of artistic license, to approximate what you want. A lot of good wallpaper images exist for many games, which you can be creative with. Good enough quality of course, is often in the eye or mind of the beholder.
Plenty of places, at least here, to print what you need, for your boxes, if your personal printer isn't up to the job or you don't have one. It's all pretty easy really, if you have the time and can be bothered to go to the trouble.
The last time I did any such, was at least a couple of decades ago, and things have improved a lot since then, though burning discs would be less common now.