Around the time this was written I knew a number of people who had bought a Mac because it was a nice BSD-like command line environment with a reasonable GUI. These same people also spent a lot of their times in ssh sessions to various Linux and FreeBSD servers.
MacOS 10.0 and 10.1 were buggy messes, but the successors were pretty good. Shortly afterwards, MacOS 10.4 and 10.5 improved on it a great deal.