Philosophical positions that you can't defend are mental masterbation without a payoff at the end. They aren't worth the time required to post them on this site.
Through defensible positions even if we ultimately believe the conclusion is wrong we learn new ways to reason about life and the world around us. New tools to inform our interaction with the world or at least new thought processes to communicate with our fellow humans.
The bald statement that 2+2 = 17 or even that 2+2=4 is worth nothing if you can't explain why you think its correct.