Jehovah's Witnesses-A Question?

If christianity is the be all and end all, why so much bickering doctrinely speaking? For heavens sake people, get a grip! That people think god cares one way or the other about these finer points absolutely beats me. Serve god and nature by doing the right thing. Leave the rest up to god. Allow people to find their own paths, because self discovered truths stick so much better. Stop wasting time and effort annoying everyone by trying to convince them that you have the exact recipe god favours.