The answer to this question is, “Absolutely not!”
There is an estimated 3 billion without a Christian nearby to tell them the gospel. If you divided this 3 billion into groups of 5000, this would mean a need of 600,000 more missionaries!
Even the small mission that I work with, which works in twenty-six countries with 265 missionaries, has an urgent need for many additional missionaries: ministry to Seafarers; workers on the streets taking the gospel and compassion to street children, prostitutes and other children in crisis; vocational instructors for street children and prisoners; teachers in schools for missionary children; workers in prisons; mentors for needy pastors; book publication and much more.
So, perhaps you would pray about the possibility of taking the gospel to those who have never heard (or repeat it to those who have heard!).
Global Missions Advocate/Facilitator & ACTION Founder