Why do you believe what you believe? Is it just because that's how you were brought up? If that is the case, then not only are you keeping company with Osama Bin Laden and the like, but you are also validating and making the case for those who seek to undermine what you believe, the Nietzsche's and Marx's of the world. Our enemy, the devil, has one offense, deception (Genesis 3:1, 2 Kings 18:29-30, 2Corinthians 10:3-5, 2 Corinthians 11:12-15, 2 Thessalonians 2). And when we who profess to believe God, are unable to make a defense when we are asked to give an account for the hope that is in us, then we give credibility to the deception that the Word of God is nothing more than tradition.
Our children, and other people's children for that matter, look at us, looking for a reason. They want to know whether or not there is any hope in this world, whether or not there is anything real, anything more than the hopelessness that they get from school, tv, etc. They want to know if forgiveness, real forgiveness, is possible. They want to know whether or not there is any reason to live for more than lust and temporal gratification (and the enemy is working overtime to teach them that there isn't). Do they see the answers in us? Do our lives testify to the truth?
We cannot afford to fail the other souls who come into our lives. They desperately need the gospel. Some will harden their hearts, but some are just looking for a reason to believe. So, always be ready to make a defense to everyone who asks you to give an account for the hope that is in you, yet with gentleness and reverence (1 Peter 3:15).