Happiness is a term too hard to define. when you find people around you so busy to find their own inner worlds and courting troubles as the inevitable consequence in real life (or rather the so called practical life).

you must appreciate the fact that the meaning of happiness to these people is somewhat different from all those around them  like us. Those bothered much 'bout the superficial dimensions of our individual life.

Is it right to appreciate them for ignoring these troubles rather than combating them? Isn't life all about fighting the world and its dubiousness? At least the 'us' you referred to, took a dip, though remained superficial, and gave their wee bit in solving the jig saw puzzle?