Because a set of tools updated 12 years ago
The point is the tools like the original poster's web site have been available for decades, and they are distributed on the OS everywhere but Windows. If you happen to be on Windows you can get the tools there as well.
Learn the tools of the trade.
I *HATE* being forced to write .bat files so I do not have to spend 20+ minutes typing out gibberish commands to accomplish something relatively simple !
This is 2015, not 1985 !
Partially agree.
Many times a GUI version will show you commands or chains of commands so you don't need to remember them.
Really good tools will have an optional window that shows the command line equivalent of what is happening in the GUI, so if you want to put the commands into a script of some type, you can copy it over.