Is it wrong to abandon your religion, and believe in g-d without a religion?

Hi, I am a 15 year old guy. I was born Jewish, and I have no problem being jewish, and I do believe in g-d. I'm just wondering if g-d doesn't look kindly upon people who kind of abandon their own religion and choose to do different things from different religions or not really have one. I still follow some Jewish customs, I just feel that I believe in g-d, but I would rather not be affiliated with any religion. Is this bad/ unacceptable in g-d eyes? Also if anyone here on yahoo answers is a rabbi/ knows where I can contact one via email please let me know.