You're not alone matey. I've had lots of tiny doubts for decades ( trumpet blasts = ohio convention, flip floppery about sodom and gomorrah, dodgy explanations of 'generations, really? ) but I've come to the point of not believing any of it now. But I'm still in. Got good friends and family, at the moment the cost of keeping them is keeping my mouth shut and attending some meetings, while doing a very token ministry. Fair price at the moment for me(other reasons apply too).
Idon't know if I'll ever leave either, but I'm working on it while trying to help my wife think more about what we're told to believe... Takes time....