I don't seek to define Him/Her. To define God would be to assume that each person's personal God is the same to them, as my God is to me. It would assume that everyone believed in the same God, or Gods, as I do.
It would also assume that if they didn't, then they believed in a lesser, or false God. None of this is true, and would be insulting and judgemental of me to think that only I could define God.
Therefore, I do not doubt the existence of Gods, for each person has their own personal relationship with their God/s of choice - that is right for them. And I do not seek to define God, because I have yet to find that there is only a finite number of Gods. My version of God/s is not necessarily the right, or the only, and I think it makes us better as humans to acknowledge that no everyone's God is the same, and that that is perfectly alright. What is not alright is forcing your definition onto others.
Define God in itself is a strange thing to try and do - God/s are undefinable. That is what makes them God/s and not human - we are definable.
And that ends the Agnostic's waffle....thank you for allowing me to finally put it into words what I believe (and not all agnostics believe the same).