A “better life” is never more than a better experience of it, not any quantifiable aspect of it. “Better” is what you, and you alone, know about your life. It is not measurable, nor does it ever need to be. Measuring is only necessary when you want to communicate value to another. But your life is yours alone; it can never be experienced by another.
The truth is that humans are nothing more than an experiential pile of shit; a constantly changing assortment of unexplainable sensations, unjustifiable impulses, and selfish whims. And, like so much trash-art, what gets created from it is something to be cherished, honored, and displayed.