Why would a Missionary leave their loved ones, to adopt families they've never met in other countries far from their own?
He came to seek and to save that which was lost. One missionary said "Lost, can be defined as someone worth finding." Without you though, there is no one to help the missionary to seek the Lost. Your involvement is what makes the difference. Invest in the Kingdom of God with your financial resources, spiritual resources in intercesory prayer, and with correspondence. Consider taking a few countries and the Missionaries with a burden for the Lost and the Partnership will return great returns.