You sound like you are on the same path as me when it came to my truly unshackling myself from JW's, also I was agnostic for the same reasons, but over time of learning free from dogma, I realized that because some principles of Jesus were good, they are not exclusive. Many atheists have a love of life that I had to come to understand for myself. Basically they have no religion to die for, but they have everything to live for and when they are moral it's roots go far deeper and truer than doing it for a myth.
Not trying to preach to you, I just feel you are starting this off the same way as myself. I came to an epiphany one day that indeed sexual relations between people (forget forinication and other negative words), Sex, a biological function of people as mammals is obsessed about way too much by abrahamic religions and their followers, where as killing is ok, for many petty things. According to the Jehovah's Witnesses, just for visiting this site, in the days of isreal you too would be buried up to your neck and have your loved ones throw stones at your head until you are dead. Look up apostasy in the insight book.