The Great commision is not an option.  It is the command of God!

Then Jesus came to them and said, “All authority in heaven and on earth has been given to me. 
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 28:18-20

"But you will receive power when the Holy Spirit has come upon you, and you will be my witnesses in Jerusalem and in all Judea and Samaria, and to the end of the earth.”
​- ACTS 1:8