Why do they say Armageddon is something? Is it because it is a gathering to war says Revelation 16:14? It looks like to me if there is something to fear it is what comes after Armageddon described at Revelation 16:17 with the pouring out of the seventh bowl.
I understand the "war" is not war but a quarrel (or strife) and it is well underway and has been going on for a very long time.
1 What is the source of quarrels and conflicts among you? Is not the source your pleasures that wage war in your members? 2 You lust and do not have; so you commit murder. You are envious and cannot obtain; so you fight and quarrel. You do not have because you do not ask. 3 You ask and do not receive, because you ask with wrong motives, so that you may spend it on your pleasures. 4 You adulteresses, do you not know that friendship with the world is hostility toward God? Therefore whoever wishes to be a friend of the world makes himself an enemy of God. 5 Or do you think that the Scripture speaks to no purpose: “He jealously desires the Spirit which He has made to dwell in us”? 6 But He gives a greater grace. Therefore it says, “G OD IS OPPOSED TO THE PROUD , BUT GIVES GRACE TO THE HUMBLE .” 7 Submit therefore to God. Resist the devil and he will flee from you. 8 Draw near to God and He will draw near to you. Cleanse your hands, you sinners; and purify your hearts, you double-minded. 9 Be miserable and mourn and weep; let your laughter be turned into mourning and your joy to gloom. 10 Humble yourselves in the presence of the Lord, and He will exalt you.
James 4:1-10