We can chase something forever, only to find that it isn’t worth it when we catch it. But the chase itself can still have been worthwhile!
Of course, the chase for some white whales is inherently destructive – after all, the source of that name isn’t a happy tale. But you can set your sights on some unattainable goal whose pursuit actually improves your lot in life.
Imagine yearning your whole life for a perfect picture of a sunset. You can never get it exactly right, but the pursuit takes you all over the world, watching nature’s beauty, and practicing a fun hobby. There are worse things than never attaining a goal like that.
Pick your whales carefully, is all I’m saying. Then pursue them to your heart’s content!