I'm running Leopard right now, and I have python, perl, curl, ssh, and tcpdump. I have no idea why wget is left out of the default install, but I just get it with macports, which is just a download and double click install away. Anyone who would be using these tools wouldn't have any problem setting it up. A few revisions of OS X ago things did seem relatively odd to the average Bash user. The shell was tcsh, and being based on BSD everything felt a bit off to someone switching from Linux, but these days it's pretty much all there. You should give it another look if you get a chance.