The world's population at this moment is approximately 6,731,780,000. http://www.ibiblio.org/lunarbin/worldpop
One angel can execute at least 185,000 humans overnight, according to the Bible's account of Jehovah wiping out the Assyrian army in ancient times.
So take the total 6,731,780,000 and subtract 7 million faithful Watchtower adherents, and you are left with 6,724,780,000 non Witnesses worthy of everlasting destruction.
Divide those 6,724,780,000 humans by 185,000 that 1 angel could take out, and you get 36,350 - the number of angels necessary for complete annihilation.
Since there are, as per the Bible account, 100 million angels -- less than one-tenth of one percent of all the angels would be needed for this merciful judgment of Jehovah's execution.
Aren't you looking forward to seeing Jehovah's heavenly organization in action, causing widespread death and destruction, with people of all ages falling into earth's deep crevasses?