Happiness is more like a yes or no, thing. You're either happy or you're not. There's little point in measuring it if you do not possess it.
That said, people that are genuinely happy with their lives are usually significantly more attractive and interesting. I should note that there is a difference between forced happiness or faking it compared to genuine contentment in your life, it's also extraordinarily easy to tell the difference.
I am both the Lady of Dusk, Vheliana Nightwing & Dark Priestess of Lust, Loreleî Legace!
~~ ~~
<3 ~ I am also the ever-enticing leader of <The Coven of Dusk Desires> on Moon Guard!