I think humans simply lack the capacity to comprehend a being such as a God capable of creating worlds/universe. Further, they also lack the ability to understand God's will, which, in my eyes, invalidates any and all religious practice. I do believe in a higher power (as per creationism), weather it is active in our world is beyond me. Though, all signs would indicate otherwise.
My main objection to religion is clear; why would a god create a world, inhabit this world with life of far inferior intelligence, and expect that this life (humans) will inexplicably discover everything about it (God) without any instruction. Why would you not make your presence known, eliminating all doubt and allowing humans to freely and conciously choose. Why test the very fabric of your creation? It is truly demoralizing. Just reveal yourself to me and I will do whatever you say.. But you leave us to stare down a thousand variants of the Bible and expect that we come to some rational conclusion. I am still waiting on this epiphany.
I certainly pay no mind to any religious practice. And when my room mate comes home with ashes rubbed all over his forehead telling me he gave up fast food for 40 days, these feelings are only reinforced.
I find myself more often than not refuting people's position on God because in almost every case they use the Bible and/or some religious practice to affirm their beliefs, neither of which I acknowledge (especially in their current form)as a basis for creationism.
As to my actual belief in a higher power - I just think it is more logical that the world was created by design rather then some spontaneous phenomenon (out of nothing).