Bitcoin is growing very powerfully but in this present scenario which factors can destroy or make its market value Zero.
Worldwide ban and world war 3, these two scenario can destroy bitcoin. If bitcoin will be banned worldwide there will be no more investors and no one can use bitcoin. World war 3 will freeze the trading industry because of the current situation global economy will collapse.
I think the users/investors itself can destroy bitcoin, if we have found a better cryptocurrency than bitcoin then the chance is bitcoin will vanish, but until now nothing has become rival of bitcoin although a lot of coins out there still they cannot afford what bitcoin has come so far. Aside from us of course the creator of this can destroy this if he wants to.