When MSDOS was in active use computers in general were used by a much smaller section of the population. That could well be because many people didn't get on with a CLI and Macs, at the time, were really expensive.

To counter that with an example of what I consider really good man pages look git.

I've learnt loads about rebasing, etc. from the examples in the git man pages.

Personally I've always loved a good CLI.