Hi Reniaa,
Don’t fall into the cliché that the society promotes as to the reason why people leave the organisation. Not everyone that leaves them desires to pursue those things that you have listed as ‘perks’ for leaving the witnesses. Some of us genuinely leave because we have found out that not only are the JW’s wrong, even in regards to their belief in the bible, but we have also done extensive studying of the bible since we have left (being that we were not really allowed to look into it as a JW and ask the awkward questions at least) and have found it wanting as evidence of it being what it claims to be…. ‘Gods word’.
Because some of us see through JW’s and also the bible doesn’t mean that we turn to a life that is without the so called ‘biblical principals’. There are many people that don’t know much about the bible that live more ‘biblically’ principled lives than many professed ‘believers’.
But to answer your question "is it the JW’s or the God of the bible you no longer believe?" my answer would be ‘both’, and it would be for the reason of studying the evidence more than it would be for the desire of ‘loose living’ as the rest of your comment implies.
But just to put a question back to you reniaa, if the bible isn’t true, what actually would be wrong with people "having sex, celebrate Christmas, gamble, embrace politics"???