Which beliefs are you clinging to that you feel the witnesses have some sort of monopoly on? There are quite a few religions out there, a buffet so to speak. You probably can find one that fits your system with a few hours of online research.
Or why not just live your religion privately? Give of yourself where you can and to causes you support. You don't need some heirarchy to tell you do this or do that. Its a pretty damn good feeling to just do good things on your own because YOU want to do it.