Because it is our Savior’s last wish

Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, and teaching them to obey everything I have commanded you. And surely I am with you always, to the very end of the age. Matthew 28:19-20

Because it is the preparation for His return

And this gospel of the kingdom will be preached in the whole world as a testimony to all nations, and then the end will come. Matthew 24:14

Because it draws you into a more intimate relationship with God

Discovering God through a personal experience of trusting Him to being used by Him. Taste and see that the Lord is good… Psalm 38:4