These type of discs are pretty nice.
Buy games on GoG which doesn't use DRM, copy them onto these discs, and no one can take your games away from you.
Laugh when Steam shuts down their service and no one can access their games anymore.
Not a bad idea. It's just that most games are only available on Steam or other DRM-ridden platforms...
I bought a BD-R writer and burned 35 Verbatim discs with it. I stored those discs in my safe and 1 year later all but 2 discs were completely unreadable. I validated the discs worked after burning them. I never burned another BD-R again. The worst part was pulling teeth to warranty the bad discs to get a new spindle of discs I will never use.
I have about that many 10-15 year old CDs and DVDs made by random brands like HP, Maxell, and Memorex. At this point, less than half of them are fully readable. The others are only partially readable, or even unusable. I had to use data recovery tools recover what data I could from them.
I hope archival-grade discs really are as good as the manufacturers claim them to be. Simulated testing is nice, but how accurate is it really?
It is at least safe to say that everyday discs are definitely not very reliable, as we have both discovered the hard way.
My only problem is (aside from doubts about simulated disc aging), the amount of data I would like to have safely archived is big enough (several terabytes) that archival-grade discs of any kind are prohibitively expensive. I don't even want to know how many thousands of dollars that would cost.