People throw 1 Peter 3:15 out as an impetus for apologetics but they don’t get the context of what that verse is about.
But even if you do suffer for righteousness’ sake, you will be blessed. Have no fear of them, nor be troubled, but in your hearts reverence Christ as Lord. Always be prepared to make a defense to any one who calls you to account for the hope that is in you, yet do it with gentleness and reverence; and keep your conscience clear, so that, when you are abused, those who revile your good behavior in Christ may be put to shame. For it is better to suffer for doing right, if that should be God’s will, than for doing wrong. (1 Peter 3:14-17)
It is about having hope of salvation even when things are going really bad. It is about not having fear and not being troubled when persecution, tribulation, and temptation comes. It’s about living a life of joy and peace when “it” is hitting the fan and everyone is in a rage, and being able to explain why you are calm and at peace.
Being able to give a reason why one has hope, joy and peace presupposes actually having hope, joy and peace. We have to work on getting those first and then we can give a reason why we have it. Then we can do apologetics with a smile, and people will see someone who isn’t a hypocrite but someone who actually lives what he says.
The word hypocrite in Greek means actor. There is nothing worse than an apologist who is full of anger, who does not have hope and therefor peace.