Commercially available write-once M-DISCs are rated for almost 1000 years.
And yet there are also a lot of audio CD's from the 80's that are holding on. A big part of it would be the manufacturing quality and how in the name of efficiency and lower prices, some corner may have been cut.
That said, if you just like the sound of vinyl and feeling of handling them then good for you and I'm not trying to rain on your parade.