Worthwhile = useful, important, or good enough to be a suitable reward for the money or time spent or the effort made.
*Does the sun ask itself, “Am I good? Am I worthwhile? Is there enough of me?” No, it burns and it shines. Does the sun ask itself, “What does the moon think of me? How does Mars feel about me today?” No, it burns, it shines. Does the sun ask itself, “Am I as big as other suns in other galaxies?” No, it burns, it shines.*
— Andrea Dworkin
Art – Enclosed Field with Rising Sun by Vincent van Gogh.