I googled this question and was amazed at the results. In my opinion none gave a logical or biblical reasoning or push that you should become a missionary. So I felt compelled to give you some reasons why you should not only consider but also should make the decision to become a missionary.
(For the record I am not a missionary so to avoid an extremely hypocritical so let me rephrase my thesis statement to why you should at least be involved in missions.)
Reason 1 – Your Lord told you to.
Matthew 28:18-20 “18 And Jesus came and spake unto them, saying, All power is given unto me in heaven and in earth. 19 Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost: 20 Teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you alway, even unto the end of the world. Amen.”
Jesus Himself made this statement and forgive my paraphrase, “I have all the power and right to say what I am about to say. Go, teach all nations and baptize them and teach them what I taught you.” How can you get around that? Paul said to the church in Corinth that, “19 To wit, that God was in Christ, reconciling the world unto himself, not imputing their trespasses unto them; and hath committed unto us the word of reconciliation.” God entrusted you with the gospel and not not only has He entrusted it to you but He has also sent you to go to a lost world with this message. Consider this statement by Oswald J. Smith, “The Lord did not tell us to build beautiful churches, but to evangelize the world.” Your job as a Christian is clear–you are to get the gospel to the ends of earth. Are you obeying your “Lord’s” command?
You are no longer in charge of your life you have been bought. Your choice is whether or not you will obey your Lord and take the gospel to the world. Why don’t you apply to the Our Generation Training Center so we can help you find a place in getting the gospel to the world?