Me too, here. It was a significant reassurance, and I was later disappointed to learn that the PC operating system did not have that same quality that earlier microcomputers had.
PCs were cobbled together in a way that earlier microcomputers were not - individual pieces of hardware could all be from different vendors, and adhering to a bunch of protocols, some of them proprietary. Then on top of that you had several different OS options (even if only considering DOS, there were still several), all of which had to support all the aforementioned hardware somehow. It's not surprising that nobody could guarantee the safety of all possible combinations - that's the price you pay for customizability.
