Aren’t grownups cute?
More seriously: The question really isn’t “Is YA worthy of my efforts?” It’s “Are my efforts worthy of YA?”
I was about to cite all the YA-specific reasons for this, but then I realized those reasons don’t matter–if you can’t approach any genre your book is being published in–YA, adult SF/fantasy, romance, mystery, mainstream, whatever–this way, that’s likely not the right genre for you.