As the Scriptures claim, one of the greatest signs of the end is the mass defection or apostasy from the Christian faith by those who once claimed to be believers. Paul, in his letter to Timothy, warns that the "Spirit expressly says that (when) in latter times (who) some (what) will depart from the faith, (how) giving heed to deceiving spirits and doctrines of demons" (1 Timothy 4:1). This great apostasy is characterized by a rebellion or revolt against God and His Word. And it is promoted by those who once claimed Jesus as Lord but are now "giving heed to deceiving spirits and doctrines of demons." Peter says "scoffers will come in the last days" (2 Peter 3:3-4). Jude calls them "mockers" (Jude 17-19).
So what are we to do in the face of this great apostasy? How do we answer skeptics when they demand we "prove our God exists?" How do we defend our faith in the unseen God? What are we to do? Historically, the answer has been to study up on apologetics and be prepared to go toe to toe with those who demand answers from us void of faith. But is that the real purpose of apologetics? I'm not so sure.
For the message (or, preaching) of the cross is foolishness (mōría - folly, absurdity, moronic, stupid, senseless, foolhardy, insane) to (who) those who are perishing (or, being destroyed completely, to render
void), but to (who) us who are being saved (to deliver, make whole, preserve safe from danger, loss, or destruction) it (the message of the cross) is the power (dúnamis) of God - 1 Corinthians 1:18.
Our faith in the cross of Christ is moronic to those who are perishing. Period. And apologetics won't change that fact. Think about it, our God doesn't need defending. He can take care of Himself. And you cannot lead someone to Christ by logically answering all their questions about faith and the Scriptures to their satisfaction. Why? Because faith in Him is a gift from God and, before God imparts faith to the individual, the lost are incapable of believing the Gospel. To them, our faith in the cross of Christ is moronic.
So, is apologetics important? Absolutely. But not necessarily in the way you think.