I left because I grew weary of being called before the Elders every time I was seen associating with a close friend who had been disfellowshipped.
I still believe a lot of what the Watchtower teaches about such things as the Trinity Doctrine, the true nature of hellfire, and mortality of the soul, just to mention a few. I still don't celebrate most holidays. I have yet to vote in an election. I don't engage in idol worship (I do not own a cross, despite joining another church.)
I have rejected such erroneous Scriptural interpretations as disfellowshipping and shunning (hence my departure). I, as do most former JWs, also reject the Watchtower's unscriptural efforts in trying to predict the exact arrival of Armageddon (i.e. 1975), or when the last days started (i.e. 1914), or the constantly changing attempt to interpret what "this generation" means.