“For I testify that they gave as much as they were able, and even beyond their ability. Entirely on their own.” (2 Cor 8:3)
While we are all blessed with a brain and a certain amount of common sense, we sometimes have to be open to an unreasonable request. Giving in a practical sense meets the needs of the local church and other things we support. A measure of diligence and consistency is definitely required.
However, sometimes God will move our hearts in compassion for others. My strong recommendation is to go with your heart rather than your head. God will occasionally call you to give beyond all reason. His ways are not our ways, and sometimes it will be irrational from an earthly perspective.
When I have been moved in this way and been obedient to the call God, He has seen that it is put to good use. Often He will take what you have given and multiply its effect.
Quick Prayer: “I know that sometimes you will call me to give beyond reason, keep me open to be obedient to your call.” Amen.