If you were to log in, you'd be able to get more information on your fellow community member.
Anyone with any Mac knowledge at all knows that this information is hopelessly outdated. Macs have been quite stable since at least OS 8.5. Further, with the move to OS X, Macs rarely crash at all. What's more, since OS X is Unix, if you have any Unix knowledge, you can readily apply it. If you want to avoid contributing to the monopoly that is Microsoft, OS X is the way to go.