Apologetics removes stumbling blocks for the skeptic & the thinker by giving logical, intelligent, believable, reasons of the hope one has.
To be unaware, to rely on conjecture - not to be able to meet darkness on its own ground, would be to throw down our weapons & betray our unaware brethren who have, under God, no defense against the intellectual attacks of the wicked.
"Good philosophy must exist, if for no other reason, because bad philosophy needs to be answered." - C.S. Lewis