I think the value of a good tutorial is priceless compared to only having sourcecode.
Specially if your new to the things you try to learn.

Reading code can be quite hard to do if your not to experienced with what your trying to learn.
To have a tutorial that gives you good description of what is happening and how the workflow of your program, it can help out many more people than what only the sourcecode could.

For me tutorials makes it easier to learn things good enough so I can make my own programs easier. You kinda learn things better, and you know you learn it the "right" way. You get the confidence to start something on your own.

I also think its easier to look up codes your wondering about in an tutorial, instead of have to scroll through lines and lines of code to get to the correct reference.

As to all of you Tutorial Writers!
Keep doing the good work you are doing! Even though we give way to little feedback on your efforts, ill bet that all the work is more than appreciated by the community!

Sorry for my bad english Hope its readable!