MS-DOS was quite simple if you think about it.
Past that point complexity kept on increasing. Don't get me wrong - I use modern day linux, modern day ruby ... it's all fine. Modern computers are fast too. But at the same time I feel we lost simplicity along the way. Now this is even more noticable with microslop everywhere.
Maybe that's the reason people are going back to older tech? Personally, I use an iPod and I find it's simple enough and does the job