Man of Lawlessness

Looking at 2 Thessalonians 2:1:12, the man and spirit of lawlessness, the great falling away, the antichrist, the 666. Are we not living in this age? Rebellious and arrogant man has set himself up against the Almighty. If we can't fight the antichrist of this age, we aren't going to fight a mythical beast of the future.