Depends on what you mean...
Why god-free morals and not God-free morals?
The main reason is because I'm not singling out the Abrahamic before any other 'type' of god.
How can your morals be god-free?
Well, in a certain sense I suppose they're not. The ethical codes of the various religions have seeped into most aspects of my homeland; f.e. the majority of British law has its basis in Christian ethics. So, in that sense my own personal morality is certainly god-influenced. However, there is another sense (that I've heard) that I'm certainly refuting. That the very basis for human morality resides in god, i.e. that we are moral means that there must have been a god for us to have moral thoughts at all. This strikes me as somewhat odd reasoning to say the least. So, in answer to the question, because I don’t believe it follows that to have moral inclinations implies a Creator of the ability to have these thoughts. Indeed, it’s not just a matter of belief; it’s a matter of reason.
Why are your morals god-free?
As might be expected from the above the main reason is I don’t believe in an interventionist diety, which is what the creation of an individual’s morality by god must amount to. I’m not totally god-free myself, it’s just my morals that I consider untouched, as they a wholly of this realm and not subordinate to some transcendental cause.
Isn't it just a pun on your name?
Yeah, pretty much, but I like the implications too.
