From the time of Cain until the last believer before Christ's return, we are all fundamentally in the same boat. We suffer the same spiritual afflictions and tendencies.

Membership is the church's corporate endorsement of a person's salvation.

Actually, having a few questions of your own shouldn't prevent you from sharing the gospel with others. You can explain to them that while you still have a few unresolved questions yourself, you don't have enough faith to not believe.

Sin claims to free but in fact it kills.

The difference between apologetics and evangelism is that in apologetics, you are answering objections that the world raises, whereas in evangelism, you are bringing the message that Christ brought. So unbelievers tend to set the agenda in apologetics, and you set the agenda in evangelism.

I think we have to realize that God sometimes gives us more time to pray, and when he does this, we can pray that he will bless those who have opportunities to speak to others.

We should want to evangelize because of the joy that God puts in our hearts. Ultimately, that's the best reason for sharing our faith.