What Are the Reasons that You Don’t Evangelize?

According to a 2013 Barna report, 73% of Born Again Christians believe that they have a personal responsibility to share their faith with others, but only 52% of those polled said they had actually shared their faith with someone else in the past year. (Link)

Do you share Christ with others? What encouragement can you give to those who don’t?

If you are among those who rarely evangelize, why not? What is the biggest reason that you don’t share Christ?