Scheme in Mac OS X

So, There is a Scheme interpreter in Mac OS X's default install. It is used for the sandboxes.

Now... Should I use Mac OS X (hey, it comes with Scheme) or shouldn't I use it?
If I don't use it I'm afraid I'll make THE SUSSMAN cry.

Nor OS X or MS OS' are worth their money.
in fact, no software is worth it's money if it forces you to pay to use it fully.
Either linux, BSD or something else.
Do you have anything against ubanto or debian?