Avdi has a pretty similar story to me. I was a big fan of the BeOS back in the day, which got me involved with the POSIX command line (
bash specifically). That led to OS X and eventually to Linux. I use Ubuntu for most things today.
Avdi’s feelings on OS X package management are similar to mine… I used OS X long enough to have used Fink, MacPorts, and Homebrew myself. I started to give up on OS X after I realized that Apple would never make a “blessed” package manager, especially after the Mac App Store came to be. (It’s interesting to note that Debian packages have been fairly constant compared to the short, tumultuous history of OS X package management.)