Why to do it?

• Therefore, any comfort of life or any material happiness which does not warrant an eternal life is but illusion for the eternal living being. One who factually understands this is learned, and such a learned person can sacrifice any amount of material happiness to achieve the desired goal known as brahma-sukham, or absolute happiness. Real transcendentalists are hungry for this happiness, and as a hungry man cannot be made happy by all comforts of life minus foodstuff, so the man hungry for eternal absolute happiness cannot be satisfied by any amount of material happiness.[1]

Reference

[1] SB 1.13.17 P