I miss the days when there was no "standard visual appearance" for the OS (e.g. DOS). I liked the diversity of interfaces.

Years ago, I remarked to a friend that I'd spent half of my (computing) life post-high speed Internet, yet almost all my happy memories are from before that. It was the same for him, and we both explored why that was.

The homogeneity of interfaces was actually one of the reasons we came up with on why doing work at a computer is a lot less appealing.